Haha I feel your pain!
I have received (and accepted) acceptance into a PhD program as well and now all I can do is think "I wonder how long it will take before they realize I am completely useless".
I love reading this thread
It takes my mind of things.
So, my username is "Pithecanthropus" which is the name of a fossil that was found in 1891 on Java, Indonesia. It's an extinct hominid which has now been assigned to the proposed species Homo erectus. It is my favorite fossil. (I studied Palaeoarchaeology but I'm sure that's clear by now haha)
As for my avatar: it's Indiana Jones lego. What's not to like about that? lol