The best thing to happen to the Amiga? Future tense?
Some company picks up the funding of UAE, by going commercial, compatibility and stability reaches an all time high, the core is optimised for hand held devices such as mobile phones etc. and classic Amiga games begin proliferating everywhere. What's more they slap the logo on everything!
The best thing to happen to the Amiga, past tense? I guess it would have to be the A500. Without whom the Amiga would have rotted away as an overpriced, underpowered workstation.