Tributes have started to come in from celebrities remembering Robin Williams one year after his death.
The actor/comedian died on Aug. 11, 2014, at age 63 in a death ruled as suicide by hanging.
His son Zak took to Twitter late Tuesday to remember his dad:
Sarah Michelle Gellar, who played Mr. Williams' daughter on the CBS sitcom "The Crazy Ones," was also among those paying tribute on Tuesday. The actress posted a photo on Instagram of the famous park bench from "Good Will Hunting," along with a touching caption.
Check it out below: