One of the great things about version control is that it covers a number of "Hit by a Bus" scenarios. I say this with an air of joviality, but each actual use case is never a nice one. I once worked with a guy, who supposedly once worked at a place where the "Hit By a Bus" scenario was a real one. Mostly you need them when a member of the team has had to leave at short notice because they quit/ were sacked / had a family emergency etc. Anyway, there are a number of times when you thank your chosen deity for the fact that you implemented a decent source control system giving you one less thing to worry about, especially when times are tough. Today, I ran across a question on the MSDN forums where someone was having one of these days and as usual, it is time to dust off the tf command line, or fire up the excellent TFS Sidekicks from Attrice - in this example it was to query history with a filter on the user that you want the history for.
