MrVacBob-sama is my favorite member of the Elitist Western Imageboard Cabal.
He even managed to make Perian less shitty. It's still crap, but that's because of dumb Quicktime limitations (MKV LOADING TIMES JUST KICKED IN YO).
I wish there was a decent player for OS X. mplayer comes close, but it's structured in a completely insane way, so doing something like adding segment linking/linked chapters would involve heavy amounts of rewriting.