One of my pet hates on the web is grey on white fonts. They really annoy me, perhaps my eyesight isn't that good. For 600 years since Gutenberg mankind has been fed a healthy diet of black fonts on a white background, and all of a sudden the last twenty years has seen web page designers using grey and other pastel colours on a white background.
VLC, the video player from Videolan.org is my favourite video player. It does pretty much everything you can think of. I use it a lot to view technical videos from the web and have found one feature I really like.
It has a sharpen feature which comes in really handy when viewing screen recording demos. The processing by some of the video websites like youtube and myspace often degrades the image quality, this coupled with the fact that the Flash format isn't that good with text in videos. Quicktime is much better.