Let’s talk about hot.
Heat in chiles is measured in scoville units. The typical jalapeno ranges from 20,000-30,000 scoville units. Pequins and tai peppers range from 80,000-100,000 scoville units. Habaneros range from 200,000 to 300,000 scoville units. Bute Jolokia (known by some as ghost peppers) is supposed to be 10 times hotter than that. Commercially available hot peppers are probably limited to habaneros and below. If you are cooking, it is good to remember not to make a dish so hot you can’t taste any other flavors in that dish.