On July 2, 2000, about 2210 mountain daylight time, a Cessna 210E, N2331F, registered to and operated by the pilot, sustained substantial damage subsequent to a hard landing at Pocatello Municipal Airport, Pocatello, Idaho. The aircraft was being operated as a Title 14 CFR 91 personal/pleasure flight at the time of the accident. Visual meteorological conditions prevailed and no flight plan was filed for the night cross-country flight. The commercial pilot and passenger were uninjured. There was no fire and no report of ELT activation. The flight originated from Boise, Idaho, approximately one hour prior to the accident. In a written statement, the pilot reported that he misjudged the landing flare. The aircraft landed hard and bounced twice which subsequently collapsed the nose gear. The aircraft sustained substantial damage to the firewall and lower fuselage. The pilot reported that he accomplished one night landing in the 90 days preceding the accident.