I regularly play old computer games, especially Manic Miner and Jet Set Willy, to bring some inspiration for my new paintings.  
To play the games I got an old laptop (75 Mhz 486, color 12" display, 32 MB RAM, 800 MB HDD, floppy) stuffed with some old games, remakes and emulators. It might be interesting to know how other people preserved their nostalgy-ware. If they only use emulators, or have a dedicated old-fashioned machine for that (or even some original piece of hardware, like Amiga, Sinclair Spectrum, C64, Amstrad, Sharp MZ or so). So, please submit something here, so as we all know more about that.