Half Baked is a solid funny movie with a plot and a motive to move the story forward.
How High is a funny lose premise with a bombardment of skits in the premise and then ultimately it ends. It doesnt have an ending. Nothing is really resolved. It just ends.
But those skits in how high are funny and have gags in gags. Theres a fight at the house party, the cops come in to break things up, chaos ensuing, Cypress Hill ducks out the back while Chuck Lidell is randomly fighting in the corner in his ufc gear. Hes not in any scene before, nor any scenes after it. Hes just there for 2 seconds and if you blink you miss it.