By: Shannon Page It’s not exactly uncommon to find comedic actors who have made the transition, or at least attempted the transition, to more serious acting roles. Nick Kroll’s latest creation, the indie-comedy Adult Beginners, is an undeniably sharp departure from the character-based sketch comedy that the comedian’s fans have come to expect from his Comedy Central show, Kroll Show.  Though it has its comic moments, Adult Beginners, which explores the relationship between two estranged…