Now I am more grown up and unfortunately think the books are a bit "childish". Also I realise the Belgariad and Mallorean contain a lot of the same. Especially the characters. But it was a *lot* of fun to read back in the day.
I didn't like his later books. I couldn't even finish the first book about the thief Althalus. Now it's not as bad as Terry Brooks' first books. Those were a blatant ripoff of Tolkien ;)
Oh, and Terry Goodkind's last book in the Sword of Truth series was a pile of ****. Man, I felt ripped off :)