Frank Vlastnik (born May 30, 1969)[1] is an American author and actor known for his roles in several Broadway productions.
[2] Vlastnik is best known as an original cast member in the short-lived musicals Big, Sweet Smell of Success, and A Year with Frog and Toad on Broadway, and Off-Broadway in Stephen Sondheim's musical Saturday Night.
He later starred on and off-Broadway in A Year with Frog and Toad in which he played the 'Snail with the Mail', and was featured on the cast album.
He also guest-starred on episodes of Law & Order, The Good Wife, Boardwalk Empire, Person of Interest, and Elementary.
He is the co-author of the books Broadway Musicals and Sitcoms, both published by Black Dog & Leventhal Publishers.