LOL - DH, and 2 of 3 DC have been named on here.
Tim is an interesting one - to my ears Tim sounds fin, but Timothy sounds a bit drippy. Every Tim I can think of uses Tim and not Timothy - I know a couple of Professors who are Tim, Tim Henman, Tim Berners-Lee, Tim Rice. Tim, Tim, nice but dim comes to mind, but doesn't match any I know of.
I used to think Rupert was drippy, until I shared an office with one - he was one of the most strong (physically and mentally) people I have ever met.