A host can really make or break a show, but these hosts defiently made the show. These hosts did an excellent job or mingling with the cast and becoming one of them. They were also very funny and added to the comedic value of the show. As you will probably notice, some of these people have hosted more than once, which obviously means they did a good job. Also, Taylor Swift's monolouge was probably one of the best so far, which she wrote herself and performed.
Here is a list of the top 5 best Saturday Night Live hosts in the 2000's:
Betty White hosted SNL on May 8, 2010
Justin Timberlake has hosted SNL on October 11, 2003, December 16, 2006 and May 9, 2009
Ashton Kutcher has hosted SNL on May 3, 2003, March 19, 2005, April 12, 2008 and February 6, 2010
Taylor Swift hosted SNL on November 7, 2009
James Franco has hosted SNL on September 20, 2008 and December 19, 2009
These hosts did an excellent job and the cast only made them look better. These hosts have gone on to bigger and better things and Justin Timberlake has even been included in a few Lonley Island songs like Dick in a Box and Jizz in my Pants. Because they were so good and people liked them, some of them were invited back and the others should be coming back fairly soon.