Time bomb set get out fast!
If you like MM speed runs, TheLag, there are some great Mega Man Zero runs at MegaZpeed. There's one for each of the three Zero games, though the MMZ1 run isn't for speed, it's for survival (it's a single-segment run with no deaths, no Cyber-Elves, no ranks lower than S, not even any leveling up between missions). I suggest getting the "UltraQuality" versions -- they're .VMV emulator-movie files, so the download is tiny.
Personally, while I love MM games even more than I love Metroid, I have no interest in speed-running Mega Man. That's not what the series is about to me. In the original series and most of the X series, there's a reason you were never timed: it's all about exploration and experimentation. Try a Master Weapon here, see if a pit scrolls there... that's why I didn't like it when X5 started the idea of ranking you on every stage. I'm not sure why I don't mind as much in the Zero series; it just seems to fit better there. The MMZ incarnation of Zero fights with style and finesse, so naturally he'd want to make good time, take as little damage as possible, and so forth.
As for Metroid, the one run you must not miss is Sesshoumaru's 1% demonstration in Fusion. It's incomplete and likely always will be, but it's the ultimate -- Sess plays Fusion like Babe Ruth played baseball. He takes absolutely no damage without even slowing down, and gets amazing times. You can find his run in m2k2's Fusion section.
Personally, while I love MM games even more than I love Metroid, I have no interest in speed-running Mega Man. That's not what the series is about to me. In the original series and most of the X series, there's a reason you were never timed: it's all about exploration and experimentation. Try a Master Weapon here, see if a pit scrolls there... that's why I didn't like it when X5 started the idea of ranking you on every stage. I'm not sure why I don't mind as much in the Zero series; it just seems to fit better there. The MMZ incarnation of Zero fights with style and finesse, so naturally he'd want to make good time, take as little damage as possible, and so forth.
As for Metroid, the one run you must not miss is Sesshoumaru's 1% demonstration in Fusion. It's incomplete and likely always will be, but it's the ultimate -- Sess plays Fusion like Babe Ruth played baseball. He takes absolutely no damage without even slowing down, and gets amazing times. You can find his run in m2k2's Fusion section.