Posting here as they are mainly Commuting miles..
Bought My Specialized Roubaix as a £1500 Christmas pressie to myself November 2010 having ridden 2000 odd miles in 18 months fair weather cycling and commuting one way on my Hybrid. Rode The Roubaix 6 times Between November 2010 and April 2011.

April started in earnest commuting one way 14.8 miles 5 days a week at 46 and 17 stone.
May 2011 decided I had to try to do it both ways everyday possible, it almost killed me, the memory of that pain on some of the rides is still pretty fresh and is one of the driving factors in keeping up the commute through all weathers, plus I bloody love commuting now, for all my moaning about the other road users.
This morning I have ridden my Roubaix 1001 times, and weighed in at 11st 10lbs. There are many, many other milestones on the journey but won't bore you with those as well
I reckon it was £1500 well spent. (even with all the other bike related purchases which thankfully I never tracked)