Quoted By:
Most of the worthwhile Anglo-Saxon poetry can be read in a reasonably short period of time - although it is wonderful, there aren't many surviving examples of it. There's a Penguin anthology "Earliest English Poems" which is great, mostly translation but with some examples of the original texts here and there.
For a dedicated student, learning Old English for purposes of reading the poetry (can't really imagine many other purposes, beyond those of the serious historian or linguist) shouldn't take a very long time.
Seafarer and Wanderer are two excellent poems, translated by Pound and again by the translator of the above anthology. You can listen to Pound speak these poems aloud, as well as students and scholars of OE reading the same and other poems in a reconstructed style.
And yes, the Song of Roland is good.