Helen Hunt has always stuck me as a smart actor. I loved her on TV years ago on “Mad About You,” and in all her film roles over the years she brings a refreshing new look at women of our times. But, in “The Sessions,” Helen reinvents herself as an actor.Helen’s performance in “The Sessions” is astonishing. Her grownup body is beautiful to behold onscreen, and the ease and calm she portrays makes the scenes with nudity and sex so pleasantly watchable. Disbelief is simply not possible. I found myself deeply in love with her Cheryl as she falls deeply in love with John Hawkes’ twisted and complex character, Mark, over their series of sessions together.