I wanted to know how to find other scientists doing similar (but different!) work to me. I like to think that I know most of the people working on nearby topics, but what about people who take similar approaches on totally different problems? There were a lot of good suggestions (especially the neuromatch algorithm), but I want to highlight two in particular:
Michael Hendricks mentioned the Journal/Author Name Estimator (JANE), which takes your abstracts and tries to figure out who you are most similar to. When I throw in a few of my abstracts I mostly get C. elegans people I know:
Annika Barber had an even better suggestion; playing around with NIH Matchmaker to find grants that are similar. It pulls up a lot of really interesting projects! Especially when I remove the name of my model organism.