Cervisia is Good
CVS is perhaps the 5th best thing since sliced bread (one, two, three, and four: you know who you are). Despite this, CVS hasn't had a GUI (not to mention a good one).
Or at least it didn't have a really great GUI.
Enter Cervisia. It's even integrated into Konqueror for file browsing. Check it out (ok!, ok! I'll stop).