Reddit user u/drmaxtherabbit recently asked, "What celebrity disappeared out of nowhere?" and the responses have slapped me in the face with nostalgia.

Here are the top-voted celebrities:

1."The musical group known as LMFAO."

2."Mischa Barton. She was on The OC in the '00s, then nothing."

3."Judge Reinhold. That dude was in pretty much everything once upon a time, and now you never see him in anything."

4."Enya. I hear she made a fortune and now lives in a castle somewhere. Iconic."

5."Erik Per Sullivan, aka Dewey from Malcolm in the Middle."

6."It will always be Thora Birch for me."

7."Mena Suvari. She was in the American Pie and American Beauty movies — also the 'Teenage Dirtbag' music video."

8."Richard Simmons."

9."Julia Stiles. She did all those movies in the mid-2000s and then gone."

10."Gotye. Dude made a single song and just became somebody we used to know."

11."Leelee Sobieski. She was popular in the '90s and early 2000s."

12."Jonathan Taylor Thomas. JTT! Where he at?"

13."Eliza Dushku."

14."Josh Hartnett. He used to be really big."

15."The band called Fun."

16."What ever happened to Seann William Scott?!"

17."Jason Lee from My Name Is Earl."

18."Josh Hutcherson. He was such a sweetheart and heartthrob. I wish his face appeared more frequently in the industry."

19."Meg Ryan."

20.Tom from Myspace.

And finally...

21."Lou Bega, who sang 'Mambo No. 5 (A Little Bit Of…)'."

Now it's your turn! Which celebrity has just disappeared from the radar? Comment below!

Note: Some responses have been edited for length and/or clarity.