Is Team Fortress 2 working?
TF2 runs, kind of. Enabling multicore doesn't work and it is crash prone.
L4D runs, but flashlight doesn't work and mat_hdr_level 0 is well, not an option :P. Enabling multicore makes it extremely dark.
TF2 doesn't work with DX9, only DX8.1.
L4D doesn't run at all.
Edit: With hd4850 catalyst 9.7, Wine 1.1.26, Cedega 7.3.1