In reply to Chris the Tall:
There was discussion of Eddington Numbers - and similar versions that could be applied to hill-climbing - years ago in The Angry Corrie. I can't find the discussion just at the minute (am a bit tied down with a work deadline), but the gist was that it could be applied both to distances (as per the original) or cumulative ascents.
To take Munros, for instance, my own Eddington-style number appears to be 17 at present, ie I've been up 17 Munros 17 times or more. To nudge it up to 18 will take a bit of effort - I'd need to get all the existing tallies up to at least 18 (and two of them are exactly 17 as things stand), plus one of the sub-17 totals would also need to reach 18. I've currently been on Beinn Dubhchraig (the next highest total) 15 times, so if I climbed that three more times plus the two 17ers once each then the overall number would reach 18.
Anyway, it's applicable in lots of situations and - once you get your head round the double-variable thing - is good fun.