Homebrew developer j13dj has released PSP Live TV which is an application that will let you watch TV stations on your Sony PSP. However, it is currently limited to 14 channels and they are all in French. Read more about PSP Live TV (PSP Application)
NintenSkinz is a user driven site dedicated skinz and themes regarding Nintendo related products and homebrew applications. Read more about NintenSkinz (NDS misc)
Gnarly Pong is a game using the "Gear Works Game Engine". It differs a bit from ordinarly Pong's as it's very colorful and makes you feel like you are on a trip. Read more about Gnarly Pong v2 (PSP Game)
This is a free browser made with Cocoa and Objective-C. This program is available for the iPhone and for Mac Intel-Based and PPC-based. Check the code via SVN in this URL: http://sfeupla.svn.sourceforge.net/viewvc/sfeupla/ or use a SVN Client. Read more about SfEUPLA (RC9) (iPhone Application)
Here is a notification utility smartWatchM for Sony Ericsoon BT watch (MBW-150). It supports all main features of Sony Ericsson phones and it even has some extra functions. Read more about smartWatchM v1.2.2.1 (PPC Application)