I don't really give a crap about PageRank as most people don't understand it but seeing as you asked: http://detectmobilebrowsers.mobi/ = 5 http://web2txt.co.uk/ = 4 (has been as high as 6 before) http://officialmp3s.com/ = 4 http://andymoore.info/ = 3 (used to be a 5)
my site's pr are 1,2,3. its hard to move up.. very hard. one of the sites actually started brand new at pr4 before it fell to 0. google just has its mysterious way.