The 37-year-old actor took to Twitter to post a photo of himself with the 49-year-old star. Kutcher captioned the snapshot, "A toast to my very talented costar. Thank you for making this job exceed every expectation I had for it."
Kutcher debuted as Walden Schmidt on the CBS sitcom in season nine, while Cryer has starred as Alan Harper since the series premiere in 2003. The show will come to a close after 12 seasons Thursday, with the finale set to air at 9 p.m. ET.