The stars of How I Met Your Mother  were together in LA last night celebrating their 100th episode at the Paley Center. The men of the series stopped to pose for photos on the way in, as a Lindsay Lohan-less  Jason Segel  and the single again  Josh Radnor  hammed it up alongside Neil Patrick Harris . Alyson Hannigan and Colbie Smulders were expectant mamas at a similar panel last year , but both stars have since welcomed daughters. Their series won big at Wednesday's People's Choice Awards , though the ladies are hoping for more — Alyson revealed her ideal guest star  would be Jennifer Aniston , while Colbie is pulling for Meryl Streep . As for the ongoing mystery  of who actually is the mother, Jason joked , "If we keep waiting, science will catch up and there's no reason that Marshall [his character] won't be the mother."
More photos of the HIMYM cast so .