I have a Dell Inspiron 9200, so some of these requests might be specific to Dell..
The ability to automatically place the computer into Presentation mode when playing a video so they screensaver/monitor turn off dont activate (right now, the screensaver does come on while video playback is happening)
The ability to use the front buttons (play, stop, pause, next, back) for VLC (Winamp allows me to assign these buttons, but VLC will not accept them for some reason)
Dual monitor support - allowing fullscreen video playback on 1 monitor while retaining control of the video on another monitor.