How can I start a conversation with the guy I fancy?

Some examples and samples:
Are آپ in any of my classes @ school?
Do آپ like cheese?
What's your پسندیدہ movie?
Who do آپ think would be a better President, Obama یا Romney?
Do آپ play football? Baseball? Basketball? Lacrosse?
Hi.
Hey.
What kind of موسیقی do آپ like?
What's up?
What're آپ doing this weekend?
Which came first in your opinion, the chicken یا the egg?
Yo.

Make him a sandwich

if u hear him say anything about something u like, for example a tv-show, movie یا video-game u could always start talk to him about that.
then it won't seem like you're desperate :) u just want to talk about the awesome thing he brought up to begin with.
don't think it'll work unless u hang out in the same circles though... 'cuz if u don't it might seem wierd to just jump into a conversation, just sayin'.

Say hi and talk to him like آپ would normally talk to anyone else.

Just ask him about anything

His پسندیدہ movie
His پسندیدہ reality TV show
His پسندیدہ snack
His پسندیدہ electronic device
پسندیدہ game
پسندیدہ subject
If he's in any of ur classes

.....so on