Is it good? (by today's standards) Which one should I buy? What's it like?

Yes I know there's a gaming thread but this gets more attention.
I havent played 2. The first one is great though. It's an amazing stress reliever.
A bit of comic relief here and there too. Which is kinda why I wanna buy Battlefield: Bad Company.
They're both virtually the same, and both awesome, insanely paced FPS games. Definitely get for a bit of no brainer, pure action fun.
It has the same objective as DooM 1 & 2, and Painkiller:
If it moves, shoot it. If it moves some more then shoot it some more.
It is extremely fast paced, and fun to waste a few hours on.
Sworn enemy of the private investigator.