Hey guys, I'm new to Android however, I rooted my NC using the Autonooter process with no problems -very similar to jail breaking an iPhone. @Aatrek - I'm using the stock video player with movies formatted for my iPhone with no issues. IDK what TitaniumBackup is so no data there. Last, no, the NC does not require the SD card to stay rooted. Super simple process.
eDuBB
Edit:
Got too excited . . . anyway, in addition to rooting my NC is updated it to see ad-hoc wifi hotspots, such as my iPhone using MyWI. One side effect, as noted by NookDevs, is that once updated, the wifi will need to be cycled once the NC goes to sleep. A small price to pay in my opinion.
App wise, Advanced App Killer, Amazon Kindle (had to do it), Angry Birds, Backgrounds, Calculator, Calender, DailyBible (gotta get my prayers on), Documents to Go (full key), Dolphin Browser HD, Easy Uninstaller, Email (Exchange compatible), Facebook, iHeartradio, Android Marketplace, News and Weather, NookColor Tools, NPR News, SoftKeys, Superuser, Google Talk, and Youtube (the real one).
DuBB