Linux phones for me. Really impressed by how these things have come in the last 3-4 years, and now we're getting close to having at least one that's usable day-to-day (with plenty of rough edges, obviously). As soon as that happens I hope more people will decide to take the plunge and really start pushing things forward.
Kanye West. Maybe he was never 'all there' mentally to begin with, but the guy was clearly a role model to a lot of young people and utterly destroyed his own legacy.