After Lily and her father begin to make a mends, Barney gets a big fat slap in the...

Ted explains why Lily has such a deep hatred for her dad

Marshall admits to inviting Lily's father to Thanksgiving dinner with out asking her

Lily steals Barney's playbook

Barney shows the guys his playbook, which all the tricks to get a girl

The gang finally learns what the scuba diver is and they realize they've been had

Barney's playbook contains an elaborate scam where you appear to be a rich guy...

Ted starts to worry that Robin and Barney are unhappy together when they slowly start to...

Robin and Barney finally come clean about their feelings and decide that it's just...

The gang decides to spy on Barney and Robin to see whats really going on and Alan Thicke...