Well, I don't know.
I was pretty underwhelmed by the first one. There was only one game that I enjoyed playing, Gish, and it was still very buggy. Lugaru looked like a game from about ~2000 (I'm not all for graphics and still enjoy old games (or else I wouldn't be here), but if you go commercial, you should deliver a bit more, methinks), Samorost was really short and while nice, not better than the free flash games of the same people, I never liked World of Goo (everyone else seems to do, though) and the last two games I diddn't have time to try. (In retrospect, I should only have donated half of what I did, but nooo, Klaue had to donate the double of the average)
Well, I still gave the second one a shot, because I like the EFF and this is as good of a reason as any other to donate them some money. I diddn't play them yet and I don't have high expectations. I allready played the demo to Osmos some weeks back and it felt like the quicksilver flash game IN 3D!! (still 2D, but with a pseudo-3D-look) and not really that good. Maybe Braid is something, because game mags like GameStar got all over it, but on the other hand,
they do overrate games way too often.
Still, I would advice everyone to get it because of three things:
1) To support indie games without DRM. I don't care too much about indie games (just because they are seldomly to never of the same quality as the ones from the big houses, in fact, the only indie games yet that I did really enjoy were Uplink and Darwinia from Introversion Software), but I care about DRM or better, the absence of it
2) You can use that as an "excuse" to donate money to the EFF and I fucking love the EFF
3) To support the "Pay as much as you want to"-model, which is an awesome idea.
PS: Sorry if this post sounds overly negative,
I'm just being a bit sick of all the people overly hyping the HIB. Sure it's great, but not that great. Feel free to flame me now
PPS: TVTropes links for fun and profit. Be careful,
they're probably gonna ruin your life