A Better VLC Icon
Having tried a lot of the alternative video players available for OS X 10.5 right now, VLC has become my favorite choice.
This mostly has to due with flexibility and the fact that it supports the Apple remote. Up until now I defaulted to NicePlayer (which also supports the remote but only under 10.4).
The only problem with VLC is the application icon which is about as smooth as a car wreck in the dock. MacRabbit has a very nice replacement icon set which also supports file types.