Places I like to hang out on the internet
Project Euler - Programming problems intersect math problems! It's fun, I swear! I use it to sharpen my algorithm programming, and my optimization skills. After you solve a problem, there are discussion boards for how to solve it faster and better. New problems come out regularly, and there is an archive of problems from their initial launch.
Jackbox Games - The party game people. Jackbox has a host of games that you can play online or in person, so there's something for everyone, any way you want to play. Check them out! Better yet, come play them with me on Mondays and Wednesday at 10 pm Eastern.
IMDb: Collaborations Search - When you just can't come up with who "that guy, that starred with those other two guys, in those movies" is! You can search for actors common to two works, or works common to two actors. VERY useful.