When it comes to Barack Obama, MSNBC is the network of thrills and chills . . . Chris Matthews famously said he felt a thrill going up his leg listening to an Obama speech. Now, MSNBC anchor Alex Witt has been similarly moved by Obamian oratory, declaring this morning "I got a few chills" listening to PBO's "very powerful" speech on immigration. Witt described her sensations to MSNBC DC bureau chief Mark Whitaker. View video here.