openSUSE on a iMac?

I am considering getting an iMac in the near future, and I was wondering what hardware issues I might expect. Is the Airport wireless supported under linux nowadays? Has anyone else run any linux on a Mac?

Maybe check out here
HOWTOs - openSUSE

Looks interesting. But is that stuff still up to date? The latest mention of openSUSE I could find was 10.3 (not that old, but things change fast).