2000s
In 2000, Sweet released Time Capsule: Best of 90/00, a retrospective compilation which featured two new tracks.
In 2001, Sweet and Darius Rucker performed The Beach Boys song, "Sail On, Sailor" on the special, A Tribute to Brian Wilson, and both the musicians later performed the same song with Brian Wilson himself on Late Show with David Letterman.
In 2002, Sweet released To Understand: The Early Recordings of Matthew Sweet, a retrospective compilation which featured unreleased material. Also that year, he formed the supergroup, The Thorns, with Shawn Mullins and Pete Droge.
In 2003, Sweet released Kimi Ga Suki, a garage-rock album initially released in Japan, of where Sweet has a significant following.
In 2004, Sweet released Living Things, an acoustic album which consisted mainly of material he wrote while recording with The Thorns.
In 2006, Sweet and Susanna Hoffs released Under the Covers, Vol. 1, which featured covers of popular 1960s songs.
In 2008, Sweet released Sunshine Lies, his 10th studio album, which also incorporated a 2-LP set featuring 4 bonus tracks.
In 2009, Sweet and Susanna Hoffs released Under the Covers, Vol. 2, which featured covers of popular 1970s songs.
In 2010, the musical "Girlfriend", which used songs from Sweet's eponymous album, was staged by the Berkeley Repertory Theatre.
In 2011, Sweet released Modern Art, an album which featured the single, "She Walks the Night".
In 2012, Sweet celebrated the 20th anniversary of "Girlfriend" with a tour which featured the entire album played from start to finish.
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