( CNN ) -- Kelsey Grammer -- actor , producer , Twitter grammarian . Grammer 's verified Twitter account started on June 30 with the tweet , `` It has come to my attention that the fine people of @ Twitter have an egregious grammar problem . I 'm here to help . # KelseyGrammerGrammar . '' Since then , the `` Frasier '' star has been true to his mission , correcting tweets . When one fan tweeted `` The movie 'Down Periscope ' w/ Kelsey Grammer is one of my favorite movies . Its a movie I can watch over & over again . Deal with it '' Grammer responded with `` I 'm honored you think so , but believe it should be *it 's . # KelseyGrammerGrammar . '' So far , the Twitterverse seems thrilled by the addition of yet another member of the informal Twitter grammar police . One person tweeted , `` @ KelseyGrammer , your hashtag # KelseyGrammerGrammar is the best thing ever ( notice my correct use of your , not you 're ) ! '' Even other celebs are chiming in on the fun . `` Star Trek '' legend William Shatner tweeted , `` Uh oh ! Dad showed up . No more fun anymore . ; - ) @ KelseyGrammer @ twitter . '' So watch your p 's and q 's , people . You do n't want to make Sideshow Bob mad .
Justin Turner 's verified Twitter account launched on June 1 . The actor is singling out tweets encumbered with errant English . William Baldwin tweeted a response : ` ` Uh - oh . Uh oh ! Dad woke up ''