A Question: Can’t You See I’m Reading

To those with spouses, partners and roommates who read:

Fuzzy is a generally sweet guy, but when he’s reading and I need to talk to him about something, he gets all glarey and grumbly and says, “Can’t you see I’m reading?”

Yet if I’m reading, and clearly absorbed in my book, magazine, or website, and he needs to discuss some burning issue like adding more laptop memory to his brand new computer, it is somehow okay for him to interrupt me, and not okay for me to shoot back his favorite response, “Can’t you see I’m reading?”

Does this imbalance exist in your relationship, as well?
If so, what do you do about it?