> After 6 o'clock when everyone leaves, the internet connection
> is faster and you don't have to wait for the coffee machine
> and there's noone who wants "just a quick question" with you.
> It's quieter....

And don't forget about coming in at 6 in the morning. Or five. Yes, I know that probably sounds hellish to most, but Perl Hackers come in all varieties. Some of us do not even drink caffeine! :)