What do you wear or take with you to accommodate the rain?

All I have is a Patagonia rain jacket. Everything else is just jeans, regular shoes, gloves, ear warmers. Yeah I get soaked. I've been meaning to buy rain pants and find something to cover my shoes that isn't just for cycling shoes. I bring a change of clothes in my bag.

Do you carry a laptop with you? I have what is claimed to be a watertight pannier system, but that accountability is high.
Yes I carry my laptop with me - I don't have panniers though. I have the Sealline urban backpack. It's nice. If your'e worried about your pannier not being water tight you could always test it without the laptop in there and spray it with water.
Sometimes I just bring plastic bags and put my laptop in it and into my backpack.