For AGA games you need an A1200 or an A4000.
For transfering stuff you've got networking, 'AMI-PC link up' kits, Zip & Jaz drives plus the PCMCIA Compact Flash adapter (and probably more that aren't springing to mind)
Oh! A PC floppy and fat95 or CrossDos in the Amiga too :-)
A4000 Mad
EDIT - and what Flashlab said :-)
