What smoothy recipes should I try? - I just got a new blender - yay!

As my questions states I have recently made a huge investment (ok huge for me Im on a tight budget!!). I bought a blender and have been enjoying making variety of drinks.

Now I am looking for more ideas.
What goes well together?
Can I have my 5 fruits and 5 veg a day all in one go?
Has anyone added tofu to one? – cant quite bring myself to do it but I do want to increase my protein intake.

Oh yea non alcholic drinks. Ideas for yummy chocolate ones and also really healthy ones – like whats good for healthy skin and detox etc.

Thanks – sorry lots of questions. I look forward to your answers :)