Mark Tobin, formerly a producer at Method in Santa Monica, has joined West Hollywood visual effects and design company A52 as managing director and executive producer. ... Director Dinh Long Thai -- a 2002 graduate of the Art Center College of Design -- has signed with L.A.'s Rhythm + Hues for commercials representation. ... Freelance audio engineer Bethany Lacktorin has joined Minneapolis music and sound design shop Echo Boys. ... John Buckley, formerly of Crew Cuts West, has joined music house Asche
& Spencer in Venice as in-house West Coast sales rep.