Space Pirates: *teleport in*
Space Pirates theme music: *starts playing*
Samus: lol, power bomb
Space Pirates: the light, it burns!
Space Pirates theme music: *abruptly cut off*
Speedruns are also very good for discovering how to beat the more annoying bosses (such as that dratted Boost Guardian from Prime 2). Except when you discover that the way the speedrunner has chosen to defeat the boss is by sequence breaking. Like on that Boost Guardian - again, you're not supposed to have power bombs at this point.