Mortal Kombat Vita looks awesome!
Buy it if you haven't played the console versions. Best fighter in years.
Nice. Inbetween Blazblue, SF X Tekken and MK, the Vita looks to be an amazing system for fighters. IMHO fighters are a good fit on portables (I got a lot of mileage out of Tekken: DR and SF Alpha 3 on the PSP). I'm keeping my fingers crossed for VF 5 Vita.