I am currently doing some research with a professor that I enjoy, and I like the lab and the team very much. So I plan on sticking with this till I leave for graduate school. Hopefully, my adviser will write a pretty recommendation for me! He got his PhD and undegrad degrees from some fancy places, and did a postdoc at a fancy place as well. How much of an advantage would it give me at these places if an alumnus was backing me?