Some KDrama:
Another Miss Oh (but just side characters that didn't have much scenes but they were memorable *the ducklingcrew*)
Bring it on, Ghost (the self claimed friends of the main lead are hilarious)
Prison Playbook (haven't watched it yet. But it's about a male only prison and didn't seem all too dark but more on the heartwarming side. A lot of people loved it)
+ 1 Eulachacha Waikiki
Man to Man (wasn't my cup of tea. But a lot of people i know had fun with it)
Drinking Solo (The three boys studiying for their exams were just really cute and they had funny scenes together. But tey are not the main focus of the drama)
The Greatest Love (If you consider the relationship of a grown up to like an eight year old boy as bromance. But they were hilarious together. Could have had more scenes though)
Because this is my first life (The friend of the male lead and the male lead together were unusual friends but they were totally knocking it off)
The Liar and his Lover (watched the first 3 Episodes. It is tagged with comedy but until now i only see a friendship between the 5 Boys that has issues. )
Dream High (totally loved this but i'm not sure about the comedy part. It's already been a couple of years... but it is a really heartwarming drama)
Entourage (haven't watched this yet. The opinions differ greatly here.)
JDramas have some good stuff on that too:
Gokusen (A classic JDrama with 3 seasons. Loved it. )
Hanazakari no kimitachi e (i only know the 2007 version. The people here are totally crazy and hilarious)
GTO (Don't remember much of the relationships. But i liked it a lot)
Pride (more a Romance Drama but with a very mature relationship. The bromance of the Icehockey team was great to watch. I loved them to bits. They have some funny and emotional scenes as well)
Ikebukuro West Gate Park (a classic like Gokusen and a total hit. Most people i know liked this. Haven't watched it yet though :( )
Akihabara@Deep (one more classic. Haven't watched this either but is mutually loved by the people i know who watched Ikebukuro West Gate Park. I heard it's a lot more weirder though.)
Kisarazu Cat's Eye (Have watched this a long time ago. Don't remember this much.)
Mahoro Ekimae Bangaichi (want to watch this. but haven't found subs yet.)
Stand Up!! (a classic too.)
Spark (is on my Plan-to-watch-List)
Yutori Desu ga Nani ka (The description doesn't sound great but a friend of mine told me to give it a try. Haven't watched it yet though.)
I heard the Chinese Drama Old Boy has some great Bromance going on but I'm not sure of the comedy factor. It seems worth checking out though.