If it's crap ... We'll tell you
Discworld and the Black Library are my favourites at the moment.
There are a huge collection of Discworld books, 36 all told, and a few more by Terry Pratchett you should check out Bromeliad trilogy, Carpet People etc. They're a little tounge in cheek and have some great political satire while also being probably the best fantasy books ever. There's also a bunch of audio drama's the BBC did which you can probably find online for free e.g. Wyrd Sisters, Night Watch, Amazing Maurice etc.
As for the Black Library they're obviously Warhammer which isn't the coolest or most well thought of hobby but despite the fact I don't collect them myself the books are quite engaging and are well reviewed. They've got a mix of sci-fi and fantasy which are both good. As well as the 20 hour unabridged ones they've also got a good selection of audio dramas that last an hour or so that are very good.