Last night’s MTV Movie Awards, hosted by Mike Myers, proved their simultaneous disposable entertainment value and complete lack of worth as anything more than an exercise in staged, promotional diddling. More than 11 months after its previous coronation as the “Best Film Not Yet Seen” (seriously), Transformers took home the prize for last year’s Best Movie, besting Juno, Superbad and I think 13 or 14 other “nominees.” Yawn. I’ll cop, though, to feeling some small (very small) surge of pleasant, atta-boy identification in the feting of perceived underdog Best Kiss winner — a smooch between Briana Evigan and Robert Hoffman, from Step Up 2 the Streets. (This win may have been foreshadowed by an opening monologue dance-off between Chris Brown and Myers, who naturally managed to get in plenty of winking, non-plug plugs for The Love Guru.) Rain-soaked and over-photographed, theirs was a clichéd clinch, to be sure, but a heartfelt and climactic one.