jlg6184: I remember a couple of the TR games being kinda blah. Are any of them must have's at their current prices?
That really depends on your taste, but I will say that I never really liked Tomb Raider that much until Crystal Dynamics took over and released TR: Legend. Now I consider myself a big fan.
If you like the puzzle parkour of games like Prince of Persia: The Sands of Time, then yes, I definitely recommend the new Tomb Raider games (Legend, Anniversary and Underworld), provided you don't have a problem with Steam. They all have their own strengths and weaknesses, but I really enjoyed all three. It looks like demos are available, too.
Guardian of Light is also a lot of fun. It's a surprisingly successful hybrid of twin-stick shooter and puzzle platforming.