There are two types of pedals/shoes

1. Road shoes/pedal which have a big cleat on the bottom and are a pain to walk in for more then ten feet.
2. SPD/mountain bike style. Shoes usually have smaller recessed cleat that makes walking easier.

I have both. For my fixed I use Crank Bros Eggbeaters which I like. They are mountain bike style and I use this bike for commuting and errands so I get off and walk sometimes. The pedals also have 4 sides which makes getting back in easier at red lights

I think the road style pedals/shoes are better for overal performance but I am just using them on my road bike because I tend to ride longer distances and not have to stop or get off

Crank brothers makes Candy pedals which are similar to the egg beaters but they have a platform that you can use with regular shoes.