There are some misleading thingies in descriptions of official levels:

"Dungeon Dilemma"
In the final version, this level contains spikes which do not actually hurt the player. Oddly, though, they worked fine in the beta.

They work fine for me, and i have 1.24.

"Tossed Salad"
This level features frees which can be shot to make them fall down.

trees*

"Weirder Science"
If you find the secret in this level, you can get to a cool bonus called Birdland.

Lies. No entrance to labrat3.j2l on Weirder Science at all.

"Loose Screws"
This is the only level in the single player to feature speed blocks, which collapse when you run through them.

Err... Retro Rabbit also had those.

"Funky Grooveathon"
Also, beware of the spoikes

Spikes*

"Medieval Kineval"
Game artist Nick Stadler has said that the gargoyles in the Medivo levels were his favorite things in the entire game to draw.

They were ONE OF THOSE.

"Snow Bunnies"
Cliff Blezsinksi

(aaaah) Bleszinski*

Blacky : That bug in Violet's tileset turned out today, before switching to J2Ov2. (fix your post because my quote is barely readable)