Devices like the Samsung Galaxy Note or the LG Optimus Vu are not either phones nor tablets - they're something in between them (phablets?). They're definitely too big to fit in your pocket but they're good if what you're looking for is a device with a decent screen size.
Here is the Galaxy Note compared to 2 iPhones. The size difference is quite noticeable.
Do you think these devices, whatever they're called (really, I don't know what they're called) are worth having? Would you ever buy one - and if so, why? Why not a tablet, why not a smartphone?