Here's a nice jig (I have yet to admit to playing any horrible ones but I'm sure there are plenty of emetic melodies on this site) which comes from the tin whistle playing of Paddy Breen from Co. Clare. Michael Tubridy put it on his LP "The Eagle's Whistle". There's a recording of Paddy Breen to be got too, in case anyone is really keen.
(26/09/2008 The link above doesn't work any more. This one does: http://web.archive.org/web/20020605035813/www.folktrax.pwp.blueyonder.co.uk/menus/main.html
A search on the page for 078 will then find the recording. It a fine recording of a great musician. I hope it is still available. The contact details on the site will hopefully lead you to it.)