Linux thread

Linux is such an excellent operating system!
I especially like having my choice of window manager.
Right now, I am running FVWM.
What do you like or dislike about Linux?

Myself and another admin type did a bit of benchmarking for what was the best/fastest filesystem to serve fansub archives (mostly read-only, large files) from at Anime LAN parties-- ext2 was the clear winner, with ext3 second, and the other journaling filesystems at the 10-30% lower mark. ext3 would be the first choice considering how the hosts of our LANs rarely have a UberUPS for everyone to use. :)