WebOS Games Manager
Javier S. Pedro's preenv webOS libraries openned a lot of doors to N900 users to run webOS games on Maemo. Unfortunately the barrier to entry for non-technical users was rather high thanks to the effort involved. Ivan Daniluk is looking to reduce this with his application, WebOS Games Manager: Automatic installer/uninstaller for WebOS games. It installs game from .ipk file, applies all needed hacks and creates desktop launcher. It also can back up/restore games' saves. The development version is currently available from Extras-devel, so if you're interested in testing (and are safely aware of the risks), then check it out.
PhoneStreamer - stream front or back cameras, with audio
A user on the Talk forums, tetris11_, has put together a front-end for streaming the video and audio from the N900. It's basically just a frontend for a few gstreamer scripts, but it's (moderately) easy to use, and allows you to stream either the front/back camera or microphone to VLC media player on your desktop PC. Currently available only as a .deb attached to the announcement post, the package should be treated with some care.
BounceBounce - a Doodle Jump clone
More iOS-game clones are coming to Maemo, this time in the form of a Doodle Jump clone from the Paper Toss developer we mentioned last week: Jamie Fuller: BounceBounce is a simple accelerometer controlled game, simply bounce your fella as high as possible. Different blocks have different bounce properties and watch out for the bad guy too! BounceBounce is currently available from Extras-testing, so if you're interested in doing a bit of QA work (and don't mind the hazards), be sure to check it out.