I use avast! 4 Home Edition. It's very good, it's awarded on a regular basis and best of all, it's free for personal use.
And I haven't had a real virus attack since 2000, so that speaks for itself.
Hard to say...I don't have one favourite...the writer who I just thought about seeing this thread is Milan Kundera, the man whose kind of writing I like very much...but he is not the only writer who I like and I have no favourite book. :roll: Kundera is en exceptional Czech (or now rather French ...