Yeah, they definatelly use WAY too much alliteration now. I mean, before they might have had two or three words in a row that started with the same letter, but now they are often going upwards of eight words that start the same in a row. And they're using a lot of stretches to get the alliteration to work, like words that I only know because my SAT prep. A lot of the time I think "WTF? Half the viewers are too young to know that word!"
Besides the alliteration, though, I think they have gotten funnier.