We all know about his 19 slam titles and it's amazing obviously. But nobody talk too much about this one, I find quite impressive too:
slam finals in a row.
From Wimbledon 2005 to US Open 2007, he reached all slam finals.
And it's even more impressive if you consider he missed the AO 2008 Final (lost in SF to Djokovic), but then managed to reach the next 8 finals from RG 2008 to AO 2010. So, 18 out of 19.