So many; it's hard to answer. Ironically, despite the fact that the amiga was largely a games console in Europe, games are in part what drove me to the PC: X-Wing, DOOM (and DOOM 2), System Shock, loads of flight sims...Amiga games seemed to be stuck in a cycle of wait for the port from PC games (if ever) or uninspired 2d platformers, which I never cared for.
While "windows" wasn't precisely synonymous with "multimedia" at the time (it was late '94/early '95 when I got my 486/100 with Win3.11) I just felt like my kitted out PC was more capable than my Amiga (my last Amiga being an A1200 with 28mhz 030 card and 4mb RAM and 60mb HD). I got my first taste of "web-surfing" on my PC back then and that was all she wrote.