[Samsung Galaxy Player 4.0, 5.0] alice90:
I've cleaned up a little bit my Player after obtaining root privileges, this thread will help you if you want to do the same.

So, below is the list of the stock apps of my Samsung Galaxy Player 4.2 that I've freezed using Gemini App Manager (see attached apk, it is a free app).

Disabling those apps is good for me, but may not be good for you. The reson for this is that I don't use social services and don't own a google account, I try to use free software and avoid proprietary ones (as much as it is possible), I will try to warn in parentheses if you may need the app, but not when the name of the app says for itself (e.g. YouTube), just keep them if you use them.

For the open source and free apps I would greatly recommend the F-Droid repository, enable Unknown sources in your settings, install the F-Droid apk and use that app for obtaining free software. You can also add the Guardian Project's F-Droid repository into F-Droid's repositories list to have more nice apps.

I would recommend not to immediately remove the apps that you don't need, freeze them, let some time to pass, then you can remove them if everything is OK. Here is my list of the freezed apps:

AccuWeather.com
Adobe Flash Player 10.1
AllShare
BadgeProvider (Keep this if you use the Gmail app)
Books
Calendar (I use the [url=http://f-droid.org/repository/browse/?fdfilter=calendar&fdid=com.droidwave.offlinecalendar&fdpage=1]Offline Calendar[/url])
Calendar Storage (Don't disable this if use the Calendar)
Call settings
ChatON
Clock (com.sec.android.clockpackage)
Clock (com.sec.android.widgetapp.analogclock) (I use digital clock)
com.sec.android.app.lcdtest
com.sec.android.providers.downloads
Dialer
Dialer Storage
Downloads
DRM content
DRM Protected Content Storage
Dual Clock
EA Games
Email (I use [url=http://f-droid.org/repository/browse/?fdfilter=mail&fdid=com.fsck.k9&fdpage=1]K-9[/url])
Factory Test
Gmail (I don'y use it)
Google Backup Transport (I don't use Google Backup)
Google Calendar Sync (I use Offline Calendar)
Google Contacts Sync (I don't keep contacts in my Player)
Google Partner Setup
Google Search (I use [url=http://f-droid.org/repository/browse/?fdfilter=duck&fdid=se.johanhil.duckduckgo&fdpage=1]Duck Duck Go[/url])
Google+
Home screen tips
Kies air
Maps (I use OpenStreetMaps using [url=http://f-droid.org/repository/browse/?fdfilter=maps&fdid=net.osmand.plus&fdpage=1]OsmAnd~[/url])
Market (I use the [url=http://f-droid.org]F-Droid[/url] repository for installing open source and free software)
Marker Feedback Agent (Don't disable this if use the official Market)
Market Updater (Don't disable this if use the official Market)
Mobile tracker
Mobile tracker settings
My Uploads (I don't use it)
Network Location (Don't disable this if you want a help for your GPS by using Wi-Fi coordinates that google has, I've disabled it for privacy reasons)
News & Weather
OMACP
Samsung Apps
Samsung Push Service
Samsung Smart View
SamsungApssUNA2
SNS
SNSAccount
Social Hub
Software update (com.sec.android.fotaclient)
Software update (com.wssyncmidm)
Street View
Talk
TalkBack
TTS Service (don't disable if you need text-to-speach)
Ustream
Videos (com.google.android.videos)
Videos (com.sec.android.app.videoplayer) (I use another video player, don't disable this if you don't have an alternative video player)
Voice Recorder (I use [url=http://f-droid.org/repository/browse/?fdfilter=voice&fdid=net.micode.soundrecorder&fdpage=1]Sound Recorder[/url] and [url=http://f-droid.org/repository/browse/?fdfilter=voice&fdid=kaljurand_at_gmail_dot_com.diktofon&fdpage=1]Diktofon[/url])
Voice Search
wipeoutreceiver
wssyncmlnps
YouTube