Born in
Rome, to father Eugenio, from
Trieste, and mother Antonietta from
Roseto Valfortore, in the province of
Foggia, Marcuzzi debuted on
Telemontecarlo hosting
Attenti al dettaglio and then
Qui si gioca, with
José Altafini, in the 1991/1992 season. In March 1992, she also presented the children's show
Amici mostri. In the 1992/1993 season hosted the entertainment show
Novantatrè, with
Umberto Smaila. She appeared on
RAI television in 1994, with
Gigi Sabani, in ''Il grande gioco dell'oca
. In 1994, she also debuted as actress in the movies Chicken Park, directed by Jerry Calà, and Tra noi due è tutto finito''. Marcuzzi started working at
Mediaset beginning in November 1995, hosting the
Italia 1 Saturday afternoon program
Colpo di fulmine, until June 1997. It became a daily show in 1996, because of its popularity. Thanks to this program, she became one of the best-known
Italia 1 hosts; in this period she started hosting the well-known music festival
Festivalbar, from 1996 to 2002, with whom she won a
Telegatto. In 2001, she presented the late-night show
8 millimetri with Paolo Brosio and, from 1997 to 1998, the afternoon show
Fuego!. She also presented the primetime show
Mai dire Gol, from 1998 to 2000, with
Ellen Hidding and
Gialappa's Band. During these years, she also acted in the movies ''
Gunslinger's Revenge, directed by Giovanni Veronesi, Tutti gli uomini del deficiente
, the TV movie Un cane e un poliziotto
and the series Tequila & Bonetti
, with Jack Scalia. In 2000, she hosted the pilot of Macchemù
, with Paola Barale, dedicated to television themes, and won the Oscar TV'' as "Personaggio televisivo femminile dell'anno". From 2000, Marcuzzi replaced
Simona Ventura in the Italian version of
Caiga Quien Caiga, named
Le Iene, presenting it until 2005, aired by
Italia 1 initially as a late-night show and then as a primetime show. In 2002 and 2003 she presented the
Telegatto awards and, in 2003 too, the
Galà della pubblicità, with
Heidi Klum; both events were aired by
Canale 5. in 2006 she replaced
Barbara D'Urso presenting the Italian version of
Big Brother,
Grande Fratello, that she finished hosting in 2015. From 2004 to 2006, she was the protagonist of the television series
Carabinieri, while in 2007 she acted in
Il giudice Mastrangelo 2. She also acted in the TV movie
Un amore di strega, with
Pietro Sermonti, her partner in 2009, and in the sitcom
Così fan tutte, with
Debora Villa. Her credits also include performances in various films and television, with starring roles in
Leonardo Pieraccioni's 1998 feature film
Il mio West, as well as the TV shows
Tequila and Bonetti (2000) and
Carabinieri. She co-hosted the final night of the
Sanremo Music Festival 2025 alongside
Alessandro Cattelan and
Carlo Conti. ==Personal life==