In school I was in love with APL. I got a chance to drop Fortran and sub it with an APL class (which my Physics prof insisted I take) and it was absolutely fantastic. What an eye opener! It kind of screws you up because --as an early stage programmer-- you can easily look at other languages and start thinking that everything else really sucks. Of course, that's not the case.
My list matches yours in probably a slightly different order. I love C because it can be very low level and also allow you to write high level code efficiently. I have written code for countless embedded projects with C as well as used it to optimize computationally intensive portions of iOS applications (where Objective-C would make things 1000x slower).
Forth? I've mostly done robotics with Forth. Wow. What a language. It's a really amazing feeling --if you ever get the chance to do it-- to bootstrap an embedded system using Forth. A little assembly and very soon you are off and running. Write you own screen editor, etc. I had a chance to do that once. It was a blast. There's nothing like writing your own disk controllers and other driver software. Forth makes it possible without a huge amount of pain. Neat.
