Rob Reiner -- Clint Eastwood's RNC Speech Was 'Embarrassing'

Rob Reiner has always had a way with words and he dropped a critical one when talking about Clint Eastwood's speech at the Republican National Convention last week ... "embarrassing."

By now everyone has seen the "speech" ... with the "Unforgiven" star talking to an empty chair meant to symbolize President Barack Obama.

Reiner, who was at the DNC, said he felt the Dems' convention was better (shocker). And last night outside Toscana in Brentwood, he told our photog he was embarrassed by Clint's baffling speech, adding, "I am a big fan of Clint's but not doing this."