He is definitely me favourite contemporary fiction writer. If you haven't read High Fidelity, run to your nearest (independent) bookstore and get it. Seriously, like, now. Also, a fun bonus of reading more than one of his books is that he inserts subtle little self-referential jokes. For example, I just finished reading About a Boy, in which the main character talks about how he loves shopping at Championship Vinyl, which is the fictional record store that is the setting for High Fidelity.
As for other books/authors, a couple of summer highlights for me have been these two:
and
Fascinating and twisted non-fiction mystery/adventure stories really well told. Vaillant is expert at intertwining various elements of complicated stories and making them read like a novel.
Another recent favourite, recommended if you're at all interested in contemporary Canadian identity: