[Xperia Z Themes and Apps] DarkKrypt:
[A heads up a majority of these are free,

Use Google for others]

Receipt is a great app here is another -

Zime (beta) to-do + calendar

Link -

https://play.google.com/store/apps/details?id=com.mobisysteme.zime

A different look and approach to the calendar.

Ill add more here from my list.

Mobile Network Settings

Link -

https://play.google.com/store/apps/details?id=diewland.settings.mobilenetworks

Quickest way to change your network mode on a non rooted device.

DiskUsage

Link -

https://play.google.com/store/apps/details?id=com.google.android.diskusage

A different approach to viewing your storage space, combine it with Solid Explorer which also recommends DiskUsage

Carbon For Twitter

Link -

https://play.google.com/store/apps/details?id=com.dotsandlines.carbon

Newest Twitter client which looks great on Xperia s

Papyrus Beta

Link -

https://play.google.com/store/apps/details?id=com.steadfastinnovation.android.projectpapyrus

A natural handwriting note-taking app

Agenda Calendar

Link -

https://play.google.com/store/apps/details?id=com.savvyapps.agenda

"The best selling on ios... now on Android"

BugMe! Stickies Pro

Link -

https://play.google.com/store/apps/details?id=com.electricpocket.bugme2.pro

Sticky notes on a cork board,

Widget , set alarms and alerts, virtual ink write with your finger and more.

SimpleMind mind mapping.

Link -

https://play.google.com/store/apps/details?id=com.modelmakertools.simplemindpro

Turn your Xperia Z brainstorming idea collection. And thought structuring device.

Dialer+

Link -

https://play.google.com/store/apps/details?id=com.contapps.android.dialer

Nice design for a dialer, simplistic.

And

Messages+

Link -

https://play.google.com/store/apps/details?id=com.contapps.android.messaging

"... You can send FREE messages over 3G or WiFi to your contacts or send regular SMS/MMS - all from one place.

Messages+ includes WhatsApp, Facebook, Twitter and more social networks integration.

Flip Sms Widget Free

Link -

https://play.google.com/store/apps/details?id=se.thoastproductions.flip.sms.widget.free

"A widget that shows your latest sms messages in a beautiful 'card flipping style'

MediaMonkey Beta

Link -

https://play.google.com/store/apps/details?id=com.ventismedia.android.mediamonkeybeta

"A media player for serious collectors"

"Media Monkey helps you navigate and manage and sync large music collection"

13th Feb 2013

King of booze

Link -

https://play.google.com/store/apps/details?id=com.daygames.kingofbooze.android

A pretty cool drinking game for you and your friends.

FlipaClip

Link -

https://play.google.com/store/apps/details?id=com.vblast.flipaclip

"Easily make flipbook movies with FlipClip"

ProjectM Music Visualizer

Link -

https://play.google.com/store/apps/details?id=com.psperl.projectM

Cost $2.75AU

Use PowerAmp or Google Music for the controls.

Also download the Hd visualizers.

Play with the setting starting with the default to get better quality.

Meridian Media Player Revolute

Link -

https://play.google.com/store/apps/details?id=org.iii.romulus.meridian

Cost Free with ads, unlocker available.

The only reason why I like this app is because you have swipe gestures.

I have my Asus Transformer Pad TF300T

mounted in my car in front of my head unit, with over 500 Full HD 1080 music videos ripped from YouTube

This allows me to swipe music videos for the next one, previous one, stop, play or even mute while driving ( I have long road trips with by myself, friends and family so its a great visual distraction for them )