I was planning on only getting one or two Vita games on launch (Uncharted and UMvC3 through work) and a few cheap PSN games (Corpse Party, Patapon, Gladiator Begins), but now that I hear that I Super Stardust Delta is going to be $9.99, I'll be grabbing that too.
If the PS1 functionality is there launch day, I have some cool PS1 Classics I'd love to have on my unit. Plenty of gaming to keep me busy until the next wave of Vita titles hit (notably Ruin, LBP, and Gravity Daze, which are three of my anticipated titles).
I've never bought a console/handheld on launch day, so I'm really excited about the Vita launch. The next few weeks are going to be hard, especially since I'll be getting some of the games before the 22nd (Uncharted will arrive on the 15th), so I'll be staring at my games and memory card, but no system to play them on. lol.
EDIT: Damn, just watched that Unit 13 video. That's a launch title? Hmm. I may break down and pick that up if I can. Man, this launch is adding up for me every day it seems. Thankfully, my February check is a free one, barring any other calamities in my life...