(In case you haven't noticed the occasional blogs about it,) Internet Problem Solving Contest is going to take place on 6th October.

For those who don't know, this is a contest for teams of up to 3 people which features both algorithmic and "unusual" problems. You can find more information in my blogs about past editions... and the link to the contest site in Bugman's comment below.

UPD: Only a short time left!