The languages I enjoy are:
Assembly(of any flavor, but especially 6502)
	It is not the easiest language or the most expressive, but it does 
give you the most control. I am a strong proponent of everyone learning to 
manage memory on their own. More on that in a future article.
C
	See above about memory management and dealing with constraints.
C++
	Although I have some issues with the way the objectified C in 
C++(Objective-C did it better IMO) the language has some beautiful ways of 
doing things. It also is really annoying to work with class pointers vs 
the struct pointers of C.
FORTRAN
	Yes. The language is old. It has some quirks. It is also amazing 
at numerical programming(which is quite important in the world of 
Physics). It is still used to benchmark computers to this day. When doing 
purely numerical work, it is by far the best. Doing non-numerical work, 
yeah I wouldn't touch it.
Python
	I hate this language syntactically, but I love the python 
environment, and the support this language has received, especially in the 
scientific world. Most of my syntax complaints I can just get over since 
the language is also very expressive, which far outweighs the issues I 
have with it syntactially
Objective-C
	I just started learning this language for work, and I am amazed at 
how much I enjoy it. The Smalltalk-like messaging system is just 
wonderful, once you learn it.

Languages I do not enjoy:
Java
	Making EVERYTHING(other than some primitives, but even then sort 
of kind of) an object is just annoying. The language is so verbose that my 
line lengths bloat out to ridiculous size. And I'm not the biggest fan of 
GC and the complete removal of memory management in a language that's 
trying to look like C/C++. Yeah, Python doesn't have memory management 
either, but it's also a more expressive and enjoyable language than Java.

Java is honestly probably the only language I have done extensive work in 
that I really do not enjoy. Which is a bummer, because it is built on the 
JVM which is a great piece of technology.