Yeah, and especially for Alyson because she pretty much went right from Buffy to HIMYM when Buffy ended in 2003 and she got cast in HIMYM in 2004. It's gotta be tough to have to say goodbye to so many cast members.
And in case you're wondering what Alyson is up to these days...
Alyson Hannigan Joins 'Penn & Teller: Fool Us' as Host | Hollywood Reporter