We have friends that think Lego RB is the best RB yet. We picked up the disc like you did: $20+10 to add 45 (at least 20 I would have paid $2/per for) to my RB2 setlist. We haven't played too too much RB recently, but the little we've played hasn't been Lego. I wanted to get some of the Nickelback songs that just came out (yes, I am that guy) but I'll probably wait until I know we're actually going to play some more RB. It seems I spend more time buying songs for it these days than actually playing it. :(
We dug the Lego Harry Potter demo, but I think I can wait for 6 months for it to be cheap. My kids aren't too much into HP yet, so it's probably one I'll get actually for the wife and me to play. We played Lego:SW 1&2 together to 100%, but neither she nor I have played Indy or Batman much aside from every so often with our son.
I tried Prototype for about an hour. It's cured me of the desire to play more of it. Lots of extremely gorey violence and loads of F-bombs. And, to make matters worse! It's not really fun.
I just picked up Darksiders for ~$8 using a combination of internet coupons and some "credit" I had at Gamestop.com. It was $10 towards next purchase credit I got when I bought Warioland Shake it for $10, which was actually $0 since I used the $10 credit I got for the game I got just before that.
I'm really into Castlevania SotN right now. It took an hour or so into the game before I really started digging it... but I'm totally into it now.
Next is Batman: AA. I traded my old version for the new version with anaglyph 3D and made $4 in the process. Then I'll hit Darksiders so I can have a Mark Hamill double feature.
And I spent a couple hours in BioShock 2 MP again. I got up to level 11. After level 10, the XP curve seems to go way up. Where-as before I was gaining a level appx every other 15 minute session, it seems I have to play 4 or so now. Not sure I'll make it all the way to 40, though I did want to max out the 'chievos on this game. But I'm not sure I'll pick up the DLC for the other 150 pts. Maybe if it ever goes on sale.
I didn't snag the ACII DLC either. The reviews I read were rather poor. If it goes on sale, I'm sure I'll snag it then. And then I'll either need to pick up my own copy or borrow it from my bud again.
Chime, which is still on sale for 240, is pretty awesome. I got my wife into that, recently. According to one review, it "Out Tetrises Tetris" so I decided to check it out. I'm more into "real" games than these goofy "little" games, but this one is really good. Very addictive.
RE: Red Dead. I'm not into Rockstar games, and I'm not that interested in Westerns. I do like free-roaming games. Is Red Dead still for me?