Best readily available ice beer?!
Answers:
I don't drink Ice anymore, but used to during my early college days. I was a fan of the following 3, in no particular order:
Icehouse
Milwaukee's Best Ice
Keystone Ice
Almost none of them were good, but they MUST be drank while cold.
Cheers!
A beer store with a great selection will have a German Ice Beer called an Eisbock.
These are strong, full body, and malty dark lagers. Some examples are Eggenberg Eisbock, Niagara Eisbock, and Southampton Eisbock.
These are the true Ice Beers and worth the time looking for a high class beer store.
Above answer is weak pansy beer. You want Steel Reserve 211 or Olde English 800 for cheap or an IPA from Dogfish Brewery for expensive. Or vodka/bourbon/rum, whatever you prefer.
EDIT: Then Dogfish ale is what you want. The 120 minute IPA has around 9% abv.