Enanitos Verdes is an Argentinian Spanish rock band that I've been listening to on and off for the last 12 years-I still can't believe that I can reference things that happened to me 12 years ago (just in case I'm 29 :-D) This band started in 1979 and to this date have 14 albums.
I like all of their songs, but especially love two of their albums: Big Bang (1994) and Pescado Original (2006). It doesn't matter how long I go with out listening to their music because it always sounds awesome. Although they've been around since a little bit before I was born the music always sounds youthful.
Here's one of my favorite songs:
To check out their site and some of their songs, click here.