An Leabhar Mòr – The Great Book of Gaelic in Archipelago.
Volume 7, Number 3 of Archipelago has a wonderful online sampling of An Leabhar Mòr, a work reminiscent of the Book of Kells. It is a collection of 100 examples of Gaelic poetry from the 6th to the 21st centuries. 20 of the poems are available in the online version, in Gaelic and translated into English, with depictions of the beautiful illustrations and calligraphy of the print edition.
Archipelago is (from what I can discern) an ongoing work of electronic publication. Current issues can be subscribed to (delivered via email in pdf format) and current and archived issues can be downloaded.
Thanks to MetaFilter for the pointer.
Update: This link takes you to an index of the poems, along with indicators of the ones with recorded recitations. Flolow the link to the poem and look for a link using this image: . Click on that link to open a new window with a recitation of the poem along with a stunning scrolling display of the Gaelic calligraphy and the English translation.