I've been quite happy with the line-up so far in terms of entertainment factor. Countries like Holland, Malta, Switzerland or Ireland especially suck almost every year, so I expected nothing else. But there has also been stuff like Serbia with its weird Gundam video show:
Or Croatia with whatever this is:
My personal favourite was Finland with its weird mixture of EBM and Eurodance, but performed with the right dose of self-irony.
Also worth mentioning is Israel, who managed to send a pop song so generic yet overflowing with terribly misguided attempts at being quirky that it transcends our pedestrian notions of what constitutes good or bad.