I find that David is a TV buff.
a computer/wine buff
John is a real film buff.
A:I find that David is a TV buff.Whenever I come to visit,he is always watching TV.
B:You're really observant.He can't help but watching TV during meals or before bed.He's even watching the soccer game now.
A:Oh,he was watching a soccer game.
B:Yes,when a soccer game comes,he doesn't even eat or sleep.
A:My brother is the same way.He likes watching soccer so much that it's almost like a lover.
B:I can't understand why they're so crazy about soccer.