Right then, top of head stuff.
Good- Level where you have to raid a house, arrest two people and confiscate some explosives. Works fucking well, because it *is* one of those terrible US reality shows. Feels like a police level, rather than the later Rainbow 6 style stuff. Also allows you to arrest both suspects with minimal violence, which is sort of the point of SWAT.
Bad- Level where you have to clear a huge great criminal gang out of some sewers where they are planting explosives. Large maze of sewer tunnels, with no map facility, and no bastard ever surrenders, so you have to kill them all. Level where you have to rescue the Russian president. Would be good if you didn't have to clear the ground floor and the stairs afterwards, which are huge, crawling with terrorists, and laid out so that you can't cover each other very well.
Good-Lord Baffords Manor. Introduces the Thief thing to the world, alternates fear and a terrible sense of power (nothing in the gaming world makes you feel more lethal than *oozing* around a shadowy corner to thump some unsuspecting guard).
Bad- Return To The Cathedral. Too scary. The Horn Of Quintus, fucking stupid layout.
Thunderforce 4- (old MegaDrive side scroller) The BioBase, has great music, wierd enemies (one guardian is a giant anteater thing on a long spring arm) and crawling blue/purple floors.
Hostile Waters- All the early levels, later ones take *ages* and are pretty mechanical. Oh, and the ending is destructive but not great.
Good- Tank and infantry levels, great sense of atmosphere, easy command system, good objectives (most of the time)
Bad- Helicopter and especially aircaft levels. Engine/control system struggles with aicraft, spotting targets from the A10 is impossible, and it's far too hard to stay in the air. Helicopter levels much better, but still rubbish compared to flight sims. Nice to have them though.
Space Channel 5- The first level. I can't *quite* do the second one. Grrr.
Silent Scope 2-The level where you go into a hall full of soldiers, then a tank crashes through the wall, and a bloke in all over leather climbs out and starts shouting like Alvin the chipmunk on speed. "I'm sorry, the opera is closed *insane laughter*, why not buy a ticket to the theatre instead?". Then you have to shoot down the barrel of a moving tank. The level after that, where you find out what the fuck he was talking about and have to shoot a boss who's being the Phantom of the Opera, in a purple cape, on a stage filled with hostages. Oh, and the last level, where you have to shoot big-boss man (the opera guy, somehow recovered from being shot through the head) as he waltzes around the top of Big Ben with the main female hostage to the tune of "The Blue Danube"
Bad- Having to shoot a sniper rifle from a moving snowmobile.
System Shock 2
Good- The ship levels, even the horrible cargo deck ones that are infested with exploding droids and zombies.
Bad- The Body Of The Many. Hours trekking around identical looking tunnels that make horrible squishing noises.
Good- The level where you have to drop flaming lava into a pit full of bad guys. And the levels where you get umbrellas or diamons five times your size.
Bad- The levels where you can get stuck at the bottom of pits and can't get out.
*is dragged away by doctors*