Linux Professional Institute
I haven't really bothered with certifications for most of my career but I've been listening to the Linux Unplugged Podcast lately which lead me to checking out some of the training at Linux Academy. There seems to be a lot of interesting training content there, so I decided that if I'm going to take the courses that I should actually get the certs to go along with them. So I started at the beginning with just the entry-level LPIC-1 Linux Administrator certification. It's not much but it was easy to knock out right away before moving on to the interesting things.