Bob Blakely mentioned Night Train (Come alive for $1.85!). Basic but effective.
One of the worst liquors I've sampled (and I drink very little) was Kao Liang Liquor from Kinmen Island, off Taiwan. A friend gave me a bottle and it was around for five years, in spite of offering some to nearly every visitor in that time. It came in a screw-top bottle with a plastic wine cork pushed in, and was marked 85-87 proof. It was clear but strange-smelling, and was best described as bad Chinese tequila. Pat White