Star Trek

are they any good 

The first two novels are great. The third is a let down in comparison, but still has moments. I'd be happy if they were made into movies. And while I don't typically consider novels to be canon, I include them in my personal canon. 

I agree with Lone Palm.  I considered the novels TGTMD through the romulan war to be canon, I think of them as the last seasons of Enterprise.

I really liked the Enterprise Romulan war books. ON JUNE 25 there's going to be  new Enterprise novel coming out . Startrek Enterprise The Rise of the Federation By Christopher L. Benett.  It's a direct sequel that continues after the end of the Earth Romulan wars. I'm really looking forward to reading about the further adventures of the Enterprise crew.Especially I'd like to know  what's happened to Trip and T'Pol and see how their relationship is explored in the new book. .