I made a Chocolate Zucchini a few weeks back.. was actually really nice! I just got the recipe online from bestrecipes I think.

We also make a lot of Zucchini Slice and freeze it, great for lunches too
Grated into pasta sauce etc
Use it as a pizza base.. sounds odd but it is out of Jane Kennedy's new cook book.
On top of pizza
Grilled on the BBQ

We have just come to the end of our zucchini plant... going to miss not have an abundant supply! Hoping we have time to get one more plant in.. with this crazy weather we might just have time!