strategies (4X ones) due to interface and partially audience
point and click due to audience and partially interface (Monkey Island had it good though)
All games with mictronsactions because of plaform restrictions (will be lifted next-gen though) so Team Fortress, Tribes, Vindictus, World of Tanks and tons of other games are out this gen
some games like DayZ due to RAM restrictions and iterations restrictions
But the biggest barrier isn't a technical one. It's platform holders that hold small budget games like Amnesia (the best survival horror since Silent Hill 2) from entering the market by erecting artificial walls of certification and other shit. So yes, if you buy a PC and start reading Rockpapershotgun your backlog will never ever end. There are tons of puzzle games like Q.U.B.E., first-person platformers like inMomentum, some other interesting stuff like a game where you play as a blind boy who sees with sound and so on. I'm not mentioning sidescrollers because there are literally TONS of them and they are playable with a gamepad.
Todd Howard:
If I ran the video game world
all consoles would be exactly the same way [as PCs].