Yeah i'm stoked for this. I think this all around GREAT news for gamers. I've always wanted to play my portable games on the TV. Especially if you are playing your portable game on the go and when you get home you still have to use the little screen. I'm VERY VERY intrigued by the prospect of it still incorporation remote play of the PS4 through the device. Meaning i can have my PS4 hooked up in one room and use the PS-Vita-TV to stream my PS4 games into the other.
Quick Positive Notes + PSVita games on the TV (physical or downloaded)
+ PSP games on the TV (download only .. better than nothing)
+ Uses same memory card as Vita (not a new format)
+ Video Streaming (netflix, hulu, etc)
+ Compatible w/ both Dualshock 3
+ Stream PS4 on another TV via remote play
+ Its sleek and small
+ ITS ONLY $100!!!

(Well, probably. No official price stateside)
I hope this things sells through the roof. This device will help build a much larger install base for the Vita.
Larger install base = more games sold. More games sold = developers making more games. Developers making more games = more consoles sold. Its the cycle that the vita has not been able to get kickstarted yet and they desperately need to do so. Overall, I'm really excited about the prospect of more games for the powerful little system.

Day one purchase for me. Will preorder the day we are able to