I still have the original medal of honor for PS1 and it was a great game in its time, Now i think the market is saturated with First person shooters, oh for a game of HD Doom.....
the following is based on the PS3 copy
Graphics
seem to be fine, acceptable at the current generation of consoles im sure the PC version will be superior, some times it looks brilliant and really moody, especially one time while your silently stalking through a afgan mountain top with only the moon for illumination its almoast etheral

sound
crack bang whistle thwump, stuff sounds bloody excellent especially when an AC-130 is bringing the rain in danger close (sorry) i only have two speakers to play with but it all sounds great dialouge seems authentic and the music is very very good, its rare i think that you find a good game soundtrack but the music is very 'earnest' and ties up with the story well i think. there is even an amusing quip about rap music in game, in your face MW!
Plot
pretty basic stuff, you flit between different characters in varying roles the apache gunner was a fun sequence as was holding off what seemed like the whole of the taliban single handedly in one sequence, people say thought provoking things, war quotes appear on the screen, people die, lots. i have one bone to pick with EA and its that it doesnt mention the SBS partaking in the capture of Bagram airbase at all, no again yanks single handedly storm the place again. but mostly the same war stuff your used to now, no surprises and you can see its all going to end in one big cluster[BEEP]
Gameplay
again its acceptable, controls seem fine, a bit vague at first but you get used to them, the shooting its quite solid and the cover mechanic that is available isnt to intrusive, i also like the slide feature quite cool, just a shame you cant slide tackle a taliban and twist his head off but thats me...
the enemy AI is at once lethal and pin point accurate and thick as a brick, quite happilly funneling down rocky valleys into your gunsight, ive never been in combat but i dont think the taliban are crack shots with AK-47s at 700 meters :lol:
its easy to rush around diving for cover popping up and pop heads too and enjoy it without getting frustrated, i played it on medium and didnt have too much of a challenge.
multiplayer
the multiplayer is probably going to be one of the biggest draws and its a odd beast at first, like the bastard love child of MW2 and bad company after a night of heavy drinking. the action is quite condensed and a bit claustrophobic, im sure twitchy modern warfare players will feel at home but may feel handicapped by the vague controls while battlefield players will feel hemmed in and pee'd off with the campers who seem to infest every corner, team deathmatch will no doubt be a refuge for the MW2 refugees, combat missions will feel familiar to Battlefield players and also MW2 players and operate over larger levels where one minute you need to demolish a gate with C4 and then hold a hanger until the area is secured.
i hated it at first now ive grown to like it BUT it still doesnt beat Bad Company 2s expansive maps and vehicles thrown in, yes there is a bradly but big whoop, progress is fair and steady there isnt much in the way of unlocks or customisation but its enough for you to find your niche i suppose and the kill streak rewards dont come piling on until someone nukes you to death like in MW2.
id say it sits inbetween MW2 and battlefield in the MP stakes
summary
i think EA have planted this right where they wanted to smack bang in the middle of Modern Warfare and Battlefield and hope it appeals to both, but when both crowds comes together who knows what will happen, the MW2 lot will probably sit in a corner and no scope you in the back

its an adequate enough game and fit for purpose, but no more than that id say, if you buy it purely for the single player you will be bitterly dissapointed as its less than 7 hours long by my reckoning.
should you get it if your a FPS nut? no imho rent it and see.