My thoughts on the demos:
NHL 2k8 - plays fine. Maybe if I liked hockey.... It could be a good game for hockey fans.
Conan - Really? They wanted this to represent the game? At one point the VO even quit working. This was the worst demo to date, in my opinion. I thought all the EA Sports titles were bad, but this takes the cake.
RCF: ToD - Fun. Not mindblowingly awesome, but I think a different level may have been better as I felt thrown into a lot all at once. This is definitely a fun action platformer, but as with most action platformers I would rather rent it and beat it than purchase it.
This is impressive considering that I never played a previous Ratchet and Clank game before and had no clue what upgrades and ammo went to what and I am still unsure of what picking up all the gear did for me, except my gun eventually upgraded. Not having a clue what I was doing, I still had fun. That says a lot.
I also bought Go! Sports Ski and Cash Guns Chaos.
Go! Sports Ski is definitely a fun quick game and decent for $3. I think the controls need a bit of a tweak, but otherwise it definitely plays better than most other games that use the controls.
Cash Guns Chaos is odd, but fun. Now I just wish that I could find out how much time I have left in my level, because I keep beating my targets but then usually end up dying before the time is up. I turned the difficulty down to wuss and at that point it is almost too easy and I find myself getting bored waiting for time to run out. I think I would do better mentally on harder levels if I had an idea of my time remaining. In the words of my wife, "That is disgusting."