21.   But indeed, grandma knows her stuff.

22.   But the One-on-One lineup know its stuff.

23.   But the man knows his stuff.

24.   But what makes the list fun is that its creators know their stuff.

25.   By that time we knew their stuff, and they were going to Hakeem a lot.

26.   Dan was quite helpful and seemed to know his stuff.

27.   From two-seam fastballs to hokey home run calls, they know their stuff and they can talk the talk.

28.   Hard-hatted, steel-toe-shoed, khaki-clad jobs where you know your stuff or someone tells you to go pound salt.

29.   Hart obviously knows his stuff.