Irregular verbs: conjugation, pronunciation, translation and examples.
http://www.theirregularverbs.com/verbList.php?language=spanish
Irregular verbs with translation.
http://usuarios.lycos.es/englishweb/irregspan.html
Irregular verbs + listening:
http://www.english.edu.vn/articles/351/1/Irregular-verb-list-and-audio-files/Page1.html
Wikipedia:
http://en.wikipedia.org/wiki/Irregular_verb
Over 300 irregular verbs:
http://www.englishpage.com/irregularverbs/irregularverbs.html
Another list:
http://owl.english.purdue.edu/handouts/esl/eslirrverb.html
Exercises and tests:
http://www.englisch-hilfen.de/en/exercises_list/verbs.htm
http://www.english-test.net/esl/learn/english/grammar/ii266/esl-test.php
