After spending a short time studying at George Washington University, Howarth decided to pursue acting, enrolling in the Eugene O?Neill Theatre Center. While enrolled, he performed at prestigious regional theaters, such as Williamstown (MA), Stagetown (Springfield, MA) and the Cleveland Playhouse. On stage, Howarth has performed on Broadway in The Lion in Winter. In addition, he has appeared in a New York Shakespeare Festival production of Macbeth, and in the WPA?s The White Rose.

Howarth most played Professor Hetson on Dawson?s Creek, and is best known to television audiences for his portrayal of Todd Manning on One Life to Live, for which he won a Daytime Emmy Award in 1994, and received another nomination for Outstanding Supporting Actor in 1995.

Roger then joined the cast of As the World Turns in the role of Paul Ryan. In 2004 and 2005, he received Emmy nominations for Outstanding Lead Actor. His other television credits include Prey and the daytime drama Loving.