I set up RapidSVN for a non CLI user who needed to use svn in a 'hurry'. I don't really know about how well it pans out though, she used it for the week or so that she needed to and then that was it. She was really green w/ technical stuff though and didn't have issues.

I really hope this takes off, sourceforge.net/projects/naughtysvn/

Looks to extend off Nautilus (love or hate, I know ... recent NFS bugs with naut. make me want to cry), which IMO would be really neat. Dunno if I'd use it regularly but it could be handy for the non-technical crowd using Gnome.