Megadrive Minidrive

I couldn't resist buying this from the otherwise fairly rubbish gadgetshop in Covent Garden. It's a plug-and-play games console which runs off batteries and contains 6 classic Sega Megadrive games, including Sonic The Hedgehog 2:

I never usually play computer games, on console or PC, but this appealed to me purely because when I was little my childminder's children had a Megadrive with the Sonics, and I was always jealous. And I've always been bitter, but not anymore. Sonic is as addictive and enjoyable as it ever was - they don't make 'em like that anymore. 2D platform games are where it's at.

P.S If anyone knows how to get past the boss in Wing Fortress Zone, please let me know...