Ed Balls is very entertaining, he plays a character well. As far as his dancing goes, he's certainly not a natural but he works hard and is improving all the time. I can imagine he is like a lot of men who decide they want to learn to dance in middle age and go to classes - except they don't have such a large audience!
Out of all the 'comedy' contestants in 'Strictly' over the years, Ed is the best imo, great fun and very likeable.
Thanks for posting the link, it was good to see his salsa again (I watched the show earlier, love it).