I am so glad to see several people listing Doctor Who as the last music they wanted to hear. Season 5 had a supurb soundtrack to it that always gets me going. Also, "Always look on the Bright Side of Life" was an exselent choice that sould have been the first song to come into my mind. =)
I would like to hear one of two songs one my way out, both of which were writen by Enter the Haggis (look them up if you don't know them, you may very well be plesantly suprised): "One Last Drink" or "Down with the Ship." The former is about an old man on his death bed who decides not to go out quietly, but rather with a huge party among all of his friends.
The latter is a song about standing by those close to you no matter what happens, and the mutual strength gained therin. Both are good songs on their own and thematicaly appropriate.