Nick and Molly, commitment-phobic and busy professionals with little in common, are asked to be the best man and maid of honor at the wedding of their mutual friends, Amy and Jamie.
| Actor | Role |
|---|---|
 Danica McKellarMolly Quinn | Molly Quinn |
 Kavan SmithNick Turner | Nick Turner |
 Tammy GillisAmy Nelson | Amy Nelson |
 Bruce BoxleitnerCharlie Turner | Charlie Turner |
 Christopher RussellJames | James |
 James ChallisWaiter | Waiter |
 Daniel BaconIsaac | Isaac |
 Bruce BlainTony | Tony |
| JJackie MinnsGuest | Guest |
| SSabrina PradaJames' Mother | James' Mother |
 Jake T. RobertsGus | Gus |
 Mark McConchieAntique Store Owner | Antique Store Owner |
 Tom TasseOfficiant | Officiant |
 Lydia CampbellAssistant | Assistant |
 Peter Graham-GaudreauJames' Father | James' Father |
| IIan CarterAmy's Father | Amy's Father |
 Elfina LukSales Rep | Sales Rep |
 Robyn BradleyAmy's Mother | Amy's Mother |
 Erin AubreyShop Owner | Shop Owner |
| MMahaila McKellarWoman at Wedding (uncredited) | Woman at Wedding (uncredited) |
| DDraco McKellar VertaLittle Kid at Wedding (uncredited) | Little Kid at Wedding (uncredited) |