I found this palindromic poem (the whole of it is one big palindrome) "Dammit I'm Mad" by comedian Demetri Martin somewhere several years ago: 
Dammit I’m mad. 
 Evil is a deed as I live. 
 God, am I reviled? I rise, my bed on a sun, I melt. 
 To be not one man emanating is sad. I piss. 
 Alas, it is so late. Who stops to help? 
 Man, it is hot. I’m in it. I tell. 
 I am not a devil. I level “Mad Dog”. 
 Ah, say burning is, as a deified gulp, 
 In my halo of a mired rum tin. 
 I erase many men. Oh, to be man, a sin. 
 Is evil in a clam? In a trap? 
 No. It is open. On it I was stuck. 
 Rats peed on hope. Elsewhere dips a web. 
 Be still if I fill its ebb. 
 Ew, a spider… eh? 
 We sleep. Oh no! 
 Deep, stark cuts saw it in one position. 
 Part animal, can I live? Sin is a name. 
 Both, one… my names are in it. 
 Murder? I’m a fool. 
 A hymn I plug, deified as a sign in ruby ash, 
 A Goddam level I lived at. 
 On mail let it in. I’m it. 
 Oh, sit in ample hot spots. Oh wet! 
 A loss it is alas (sip). I’d assign it a name. 
 Name not one bottle minus an ode by me: 
 “Sir, I deliver. I’m a dog” 
 Evil is a deed as I live. 
 Dammit I’m mad.