/\ I'm currently writing a fight scene too! lol
So, I definitely second what KonohaKitten said! I watch anything with fight scenes. The Bourne Identity series (all of them); Electra with Jennifer Garner and Cat Woman in the most recent Batman (for girls); some of Keanu Reeves movies' (Matrix, and some of his other action ones), the last two Star Treks and some of the most recent Tom Cruise movies. Basically any sci-fi-ish movie with good fight scenes.
And truthfully, I don't watch too many realistic ones (although I'm a die-hard Bruce Lee fan), because the fight scenes I want to write are action-packed, one-sided, over-the-top, high impact ones. So the adrenaline pumping fights in those movies above work best for me. Lots of high-paced movement, change of scenery and use of available objects. That just doesn't happen in traditional fight movies.
Oh yeah, and Daniel Craig as Bond. Crazy-good fight scenes!
Second, I think the biggest thing you can do to help any fight scene, big or little, is to make sure the stakes are established. Make sure the reader knows what the main character is fighting for, and especially what will happen if he loses and/or what he stands to lose. That makes each punch, each kick, each smack, that much more excruciating, without you having to write a bunch of florid description. The reader knows what's at stake.
So I guess what I'm trying to say is it's now just how you choreograph the fight itself but how you frame it for the reader.
Another good piece of advice I read was to treat women and short/slight men as more dangerous than the big, thick brawlers. Because women and shorter/slighter men know the deck is stacked against them in a fight, so they are going to go all out. They are more likely to be vicious fighters who give your main character a run for his money (or vice versa if your MC is a girl, she will still be fighting long after others would have given up), than the big guy who pops his knuckles and makes a lot of the threats before he whales on him.
Anyway, do a google search or pinterest search for writing fight scenes. There's lots and lots and lots of stuff out there. Some more detailed than others, but you're sure to find something to help you get started. You're definitely not alone in wading into how to write a fight scene that packs a punch! lol - I couldn't resist!