Shaun of the Dead (2004, Directed by Edgar Wright)
It's a charming take on the zombie subgenre. It's teeming with witty satire and the odd fright. It's also full of likable – and mostly recognizable – British stars whose characters all invoke a reaction (whether it be laughter, sadness, or outright hatred).
Arachnophobia is like an alien invasion movie with a far more plausible – and therefore even more terrifying – twist. It's genuinely chilling and doesn't take a comedic turn until Goodman's exterminator character Delbert McClintock arrives.
Dr. Terror's House of Horrors (1965, Directed by Freddie Francis)
Although it leans more towards comedy than horror, this movie still provides a few minor chills on top of the laughs. The cast performs splendidly – no surprise, given how many horror veterans are in it – and the cinematography is gorgeous.