In the DVD, the film recommendations....
On the DVD in the film recommendations, it says:
If you enjoyed this film, here are some other recommendations:
Trainspotting
Scream
Supercop
Pulp fiction
Now, I agree Trainspotting and Pulp Fiction are great movies, destined to be around for decades to come. But none of these are close to what I'd recommend if some one told me they loved Switchblade sisters.
Its just shameless promotion and it waste what could be a great extra feature of recommending similiar films.