shooter with split-screen?

L4d2 is playable with a 360 controller in splitscreen mode.

Borderlands has great Xbox splitscreen, don't know about PC.

What about sth like The House of Dead? Is there anything newer and similiar?

Serious sam 3 =)

Here you go -> http://www.youtube.com/watch?v=N2oUUVjlyWE

borderlands 2 will have split screen.
BLUR has it aswell as Kane and Lynch.
Sonic and sega allstar racing.
split second. and probably a lot of other games ^_^

Not an FPS but check out Awesomenauts. Great split-screen support, up to three local players vs online.

the only pc fps title with split screen that i can think of are the older Serious Sams (which were great BTW), besides that the only other split screen game i can think of is split/second (racing genre)

I think Kane & Lynch: Dead Men has split screen, I could be mistaken though.

all local co-op games

E.Y.E: Divine Cybermancy has splitscreen too.