As a personal challenge of mine, I wanted to finish the year strong with "4 certs in 4 months" (September to December) and did it!
1. CHFI (Computer Hacking Forensic Investigator) - added credibility to my work transition into routine host analysis/forensics
2. GICSP (Global Industrial Cyber Security Professional) - work in a sector where this is valuable
3. CEH (Certified Ethical Hacker) - just finished a Vulnerability Analysis master's course, so wanted this to finish it off.
4. CIW Web Security Associate - ran out of money

, so took a stab at this and enjoyed it, although no marketable value
Watched tons of videos (Cybrary, ITPro.TV, YouTube) and read all the books cover-to-cover (minus the CIW exam) to get trained up.
These certifications have already helped me get an edge on fellow employees that might have looked similar until now.