[Tilt, TyTN II, MDA Vario III Themes and Apps] rockerrock:
I'm gong to share my favorite applications/games for the Kaiser. Some tips may be thrown in as well!

Applications:

Memory Map weather radar

Just what it says, fast loading animated weather radar. With zoom support and location settings.

BTSpammer

This little program will send out vcards, images, or text messages to any device in range. It is VERY useful for walking around the mall to send bogus messages such as: Welcome to our store! Please note that while in our store it is policy to record phone calls, sms messages, and contact lists while you are on our property to help deter theft. If you do not agree with this policy please see a store manager or leave at once. Thank you for your compliance, store management.

WiFiFofum

Best damn ppc wardriving tool out there! Honestly, the only way my laptop could beat this app is to have a external GPS unit. I keep it on while I'm in the car to find exciting locations around the city. I recommend exporting to memory card in a folder than merging files as you go along. upload the results to a wardriving map so others can benefit on your findings.

Tilt keyboard fix

Does what it says. Fixes hardware keyboard assignments for custom roms. No more will I have to guess where ! is at

Resco Keyboard

I love this keyboard! I can use it with my fingers if need be. My only gripe is that the . @ and other common punctuation marks are in the number page. It drives me crazy to switch between numbers and letters so I installed a new skin in the included skin downloader.

Resco File Explorer

This comes in major use on a day to day basis for me. It can browse network shares, do FTP, and modify my registry. Not only does it have a touch friendly interface option, I find it much more useful than touch commander for most tasks. Built in search is fast and you can populate the window with results for mass selecting and modifying.

Sprite Backup

I use this backup program (from the makers of norton ghost) between ROM upgrades. It is so good that if you don't configure your restore properly you run the risk of reverting changes made in that new rom release to the one you upgraded from. Nothing outside ROM is safe from this monster, I have had no issues with multiple backups and restores

Safemode

There is a program for ppc called safemode. What is does it lets you go into a limited shell (accessible from splash screen) to remove applications, browse folders, modify the registry, and some more. Why run the risk of having to hard reset when you can just remove that today plugin that's making it fail I hate having to reinstall everything over again, now you don't have to.

Magi Call 2

I use this program a lot more than I will ever know since it runs in the background with a nice GUI for configuring it. Don't want someone calling you? Block em! Want to create custom rules for sms and phone numbers? MagiCall it! I found out about this little program when a ex girlfriend would not leave me alone. Now I have all sorts of telemarketers and spam blocked. Owning a Kaiser for any reason would be the addition of this program! Every phone should have it! (might want to try callfirewall. free and it is also a nice program fro here at XDA!).

Opera Mini

Sure Opera mobile and skyfire is great for media rich web surfing but I hate waiting for pages to load. If I need flash, I'll start up my Nokia N810 or netbook. Very very unbelievably fast while still retaining my loved feature of double click zooming. Comes with a option to sync with your desktop version of Opera. Have not tried that out yet.

nueGPSSecurity

I don't know how many times I have lost my phone in my house and this free program has saved me! I just send a sms to my phone via e-mail and the alarm will go off giving me a beacon to save the Kaiser. It's also good for remote tracking if your phone gets stolen and other features but I have not tried these yet since my phone has not been stolen.

S2U2 (slide to unlock 2)

I don't use the unlock function very much like other people do (you know, to check the time, I wear a solar powered atomic watch), instead I love the slide to answer function. I no longer fear answering my phone my accident because it is in my holster or pocket. Something that looks cool and is functional.

Newsflash RSS reader

Siimply the best RSS and podcast reader on the planet for my uses. Sure, the included RSS reader is fine and all but I listen to a lot of RSS based podcasts. This will also work for video podcasts. How it works is it saves the mp3s and mp4s (or any other supported format) to a folder you setup in the settings and let it rip! I run it in the background at startup and use manila's media page to listen/watch my feeds. This functionality should of been made in the phone.

To manage all of these applications I simply turn on "view hidden files and folders" and go to my device on my PC, then in the "windows/start menu/programs" folder I categorize all my apps into folders. This way, when I go into programs, i don't have to search forever to find a program. TIP! Make a favorite in windows explorer of the start menu folder. Having to go into windows then your start menu folder takes forever for the file list in /windows to load. You will have one click access to where you want to go.

I may of missed some but check out my application install list!

http://xdaforums.com/showthread.php?t=470519

It does not go slow with so many apps as others believe. After all, what is installed doesn't slow anything down, it's what's running that does.