It's not often a comedy routine comes with a moral lesson attached. But that's luckily what you get by way of Mike Birbiglia's solo show Sleepwalk With Me now at Theatres at 45 Bleecker Street. It's an 80-minute grinathon that is delivered with the sunniest good humor, under Seth Barrish's unprepossessing direction.

Birbiglia -- who enters and exits through a gaping space deliberately designed by Beowulf Borrit as a metaphor for a crucial turning-point in his past -- is never explicit about the lesson he's teaching and which he earned the hard way. But put into words, it would go something like, "See your doctor at the first sign of significant physical or psychological trouble." Apparentl[...]