@ Basically everyone. You're morons; Monk is a zero to ONE level dip.
@ Basically everyone. This is for a game that has run since 2nd Edition, converted to 3.0, and 3.5. One of our characters just got pwned creamed wtfowned and due to RP purposes, has to remake with a Githzerai. Because the party is terrible and the stuff we face is terrible and our DM is drunk by the time we get to crucial rounds, I figured I'd help the friend to build a monk because of its' badness. All of the other players think raising caster level to cast fireballs in the two-digit d6's is broken. So, as Jaron said, it only matters what the rest of the part is like and this one has: 13 Cleric, 10 Beguiler, 10 Rogue, 10 Archery Fighter, 1/4/1/2/1 Random Stuff (we call him 'The Fool'). Doesn't sound like the worst party in the world, but when you have stuff like "Iron Will" and "Improved Reflexes" on the Fighter... Or a cleric that throws javelins (with no kind of focusing in that direction) on his turns...
Disarming is virtually useless.
In this game it's probably "broken."
Grappling is far too situational and requires a lot of investment to make it work, and Monks really aren't suited to it (you want to be able to get bigger, like a Psychic Warrior with Expansion or a Druid with Wild Shape).
Run up to a Wizard (IN ONE OF OUR GAMES) and tell them it's useless. They'll never think of a way to get out.
Tripping can be fun, but again getting bigger is a huge deal... you'll need to use Taleshtora or some other method of getting a lot bigger if you want to use that a lot.
Yes, yes, everyone knows bigger monks are better. I'm just so unfamiliar with them that I don't know common methods of getting bigger, though I doubt he'd want to go past large. Have a Cleric ready to enlarge him. I don't think damage will be a problem. As long as he's doing 4-5 swings at 3d6+STR he'll be on par with the rest of the party.
Eh, probably not worth doing too much. But you could consider lowering your opponent's saves.
This sounds exactly like the direction he'd like to go into. Stunning fist is one of those things that suck. Well, how good can we make it suck? I swear you can bump the range, DC, and make it do different things/get more uses of it.