Weddings are usually happy occasions, but on the Season 10 premiere of The Big Bang Theory, which airs on Monday, Sept. 19 at 8/7c, Penny and Leonard find that happiness comes at a cost: the constant—and sometimes stressful—wrangling of parents, siblings, roommates, and friends.
For the groom, this means dealing with the fallout of
his father (Judd Hirsch) and Sheldon's mother (Laurie Metcalf) skulking off together after the rehearsal dinner.
Meanwhile, Penny has to reign in her offbeat family members, including her anxiety-ridden mother Susan (
Katey Sagal) and her drug-dealer brother Randall (
before the wedding ceremony.
That's not to mention the unexpected appearance of Colonel Williams (
Dean Norris), an Air Force Representative from the Department of Materiel Command, who takes an interest in Howard's quantum gyroscope.
PHOTOS: Wedding Bells Ring Twice For Leonard And Penny
How will the happy couple handle the stress?
Watch the Season 10 premiere of
The Big Bang Theory on Monday, Sept. 19 at 8/7c on CBS and
CBS All Access.