Both girls generally love it when Mark gets home (Claire's a little more hit-or-miss on that subject than Kate is, since she is more of a "Momma's girl") and situations such as this often arise:
This was the take down and tackle of the Daddy tickle robot.
First Claire's turn.
Then Claire goes in for the assist.
Just another reason why my husband rocks - I'm sure after a long day at work being attacked by two young children isn't necessarily the most "relaxing" time, but he does it with a smile.