Languages would be bands:

1. Scala:         Only for the cooooolest companies and projects.
2. Erlang:       Pretty damned cool but not as cool as Scala.
3. Python:      Cool but getting too mainstream for anyone really indie.
4. Ruby:         Ruby is pretty and her friend Rails is easy.
5. PHP:          Way too popular to be cool.
6. Java:          It makes business people happy.
7. C++:           Cool because only the 31337 can avoid buffer overflows.
8. C#:             A great language for people who use Windows.

Not included in the list are more front-endy type languages which are usually paired with one of the above. These include (in order of coolness):

1. Unity (for when the web really turns in to the Metaverse)
2. ActionScript 3
3. Javascript
4. Objective-C