While I can't stand Linus personality, I have to admit that the DVCS idea is just plain AMAZING. I personally like Mercurial over git since it uses the same interface as CVS/SVN whenever possible and it seems to be a little simpler than git without giving up any of the advantages (I'm still new to both of them, so that may not necessarily be true). One of Linus' big knocks on Mercurial was that it couldn't scale and that it couldn't perform as well as git, but in the benchmarks/timing studies that I could find they seemed to be in the same ballpark, so maybe that claim was earlier in the development cycle or something.
But at any rate, I think that the ease of merging branches is a HUGE gain and I have already cleaned up some of the ugly brances and odd copies that I had hanging around on my computer. I'm definitely converted to the DVCS revolution.
I would also just like to add that to get WinMerge to work with TortoiseHg 0.5 I added the following lines to my mercurial.ini file:
[extensions]They have a wiki page describing how to setup merge tools, but I couldn't get it to work for some reason, but the above worked.
cmd.vdiff = C:\Program Files\WinMerge\WinMergeU.exe