How many jobs or how many careers?

Let's see...since I completed my first college degree:

Retail - department manager Jordan Marsh
Retail - assistant buyer Bradlee's
Retail - various store management positions including general manager for Gap, Old Navy and then Polo Ralph Lauren Factory Stores
Bartending - at a Joe's Crab Shack
Retail - sales associate & stock manager while in school again Ann Taylor Loft
Engineering - engineering intern at a hospital supply company
Engineering - lab instructor at my university
Engineering - Systems Engineer for Raytheon
Engineering - Product Engineer for RFMicroDevices (or RFMD as they are called now)
Engineering - Product Engineer for my current company
HR - College Program Manager and technical recruiter for my current company

What's next? I still haven't ruled out Vet school, but I'm also considering an MBA and recognizing that I might be getting a little old to be making sweeping career changes again. But, never say never...