The skinny: There's now a
Time-Lapse View for Subversion.
One of the things I missed from Perforce was its excellent "Time-Lapse View". It's basically a window with a slider that you could drag to view all revisions of a file. Kind of like Subversion's blame command, but applied to whatever revision you scrolled to. Differences between revisions are highlighted.
Well
now we have a Time-Lapse View for the Subversion world, as you can see from the screenshot above. First, select your file then press Load. The last 100 revisions will be downloaded (you can stop it early if it is taking too long). Then you can drag the slider to find out exactly when that line was added, or who deleted your cool function, or why that code was changed.