If my boss caught me playing civ3 at work, or any other game come to think about it, I'd tell them that it was quite ok, as it is the official version, and not some hacked version downloaded from the net.
I think that would be make them happy.
Another excuse would be... "But it helps me think."
Just had a thought... What would our "To do" List at work be?
1) Read and send emails
2) Read and send forum messages
3) Eliminate Russians on northern border
4) Meeting @ 11am
5) Think of excuse why I didn't attend meeting
6) Colonise large island to the west of capital
7) Lunch
8) Think of excuse as to why lunch was nearly 2 hours long
9) Form alliance with Germans to fight off the Chinese to the south
10) Repeat items 1, 2
11) Go home