Some interesting responses so far.
I don;t own Banacheck but do own Liquid Metal so it's difficult to make a real comparrison unless you own both - perhaps. Liquid metal kicks and if you have it and don;t use it, then you're missing some great opportunities.
There are credits on Liquid Metal to Banacheck so as Siege said there are similarities and this is a single effect rather than the more in depth teachings that people vouch for with Banacheck.
Asda forks are the best. The consistancey of the forks from Tesco and Wilkinson are a little hit and miss. I won't expand on this as it will begin to expose part of the effect.
Metal bending will not suit everyone. There are references to your hands in the Liquid Metal DVD so it's covered in sufficient depth for the effect.
Forget about how Banacheck and Morgan perform, it's all about how you perform this and how convincing you are. Morgan;s teachings are more than adequate and he covers the psychology of the effect in good detail.
Taneous sums the DVD up very well. For £17 LM will get you going and give you some good teaching. You can then decide if you want to add Banacheck to your collection.
My experience is with Liquid Metal but this probably goes for Banacheck as well. If your performance is polished then the specs will be as twisted as the fork is at the end - and they get a souvineer to take away that will keep them guessing for weeks after.
I was thinking about having may name and number etched on the fork and using it as a business card

Member of the Magic Circle & The 2009 British Isles Close-Up Magician of the Year
It's not really an optical illusion - it just looks like one!