The Penguin - address or phone number?
2723 w. lawrence. south side of the street, set back, sandwiched between Han Bat korean restaurant and a laundromat.
It is odd that their listing does not show up in any on-line directory (www.yellow, yellowpages.com, metromix, citysearch) luckily I had their refrigerator magnet at home. If you go in you may want to let them know about this - they may be able to get their place listed.
Also, I have been 5 or 6 times now, and the TV is always on and always loud. There are basically two choices- Agentinian MTV and soccer from Foxworld sports. The soccer makes for a much less annoying hang-out. So check your local cable-guide.