The episode features the main series cast alongside notable guest performers: Character Type Will Truman Series Regular Debra Messing Grace Adler Series Regular Megan Mullally Karen Walker Series Regular Sean Hayes Jack McFarland Series Regular Paul Satterfield Sumner Davis Guest Star (Karen's nephew) Peter Jacobson Paul Budnik Guest Star (Will's boyfriend) Bill Idelson Guest Star (Theater patron) Seemah Wilder Guest Star (Theater patron) Production Credits "Will & Grace" Mad Dogs and Average Men (TV Episode 2001)
: Grace becomes instantly smitten with Sumner Davis , who is revealed to be Karen’s charming and handsome nephew. Desperate to prevent the two from dating, Karen fabricates a "litany of lies" about Sumner’s supposedly dark and unstable past to scare Grace away. Cast and Guest Stars "Will & Grace" Mad Dogs and Average Men(2001)
is the 18th episode of the third season of Will & Grace (64th episode overall), which originally aired on March 15, 2001 , on NBC. Plot Summary The episode features the main series cast alongside