Seems like a good idea for a list to me:
1) Free streaming music from Seeqpod.
www.seeqpod.com/iphone/#_home
2) Web based applications and viewers for them like
http://appmarks.com
3) Increasingly good web based games
4) More and more websites being formated for iPhone like
http://iphone.facebook.com
Thats all i could think of for now, so even though you may not be able to get the third party applications for the Touch just yet, maybe these tips will keep you busy until someone's able to get into that thing. Look at it this way, all us iPhone people had to use these web based goodies before someone made it nice and easy to install third party apps, but the goodies werent as good a few monthes ago.