This last couple of weeks...
Amiga 1200:
UFO Enemy Unknown (AGA version)
Slam Tilt
Speedball 2 (2 player, which is the BEST way to play Speedball!)
PC:
X-Com Enemy Unknown
X-Wing Collectors Edition (tweaked to run on Windows 7)
Dungeon Keeper
iOS:
Pinball Arcade - just can't get enough of this, hope they green-light the Steam version for PC eventually.