Mosconi has been a well-known television personality in Northeastern Italy since the 1980s, through his sports anchor job at Telenuovo in Verona. He was known for his elegance and calmness in front of a television camera.
In 2004, he was the subject of an anonymous Internet video that made him known all over Italy and around the world. The video shows some of his off-air bloopers, featuring his irate reactions to various problems (people unexpectedly entering the studio, various noises, illegible writing on the news sheets he receives, or simply his lapsus linguae).
The ample use of swearwords, insults and other rude language in his Venetian accent, as well as other humorous antics, have made this video into a viral video. Very quickly, many Internet forums discussing Mosconi appeared, as well as fan clubs in Italy and in other countries, and comic cartoons featuring Mosconi's voice. However, Mosconi has not been receptive of his notoriety, declining every interview or proposal related to the video.
Mosconi is also an editor of the German-language magazine Gardasee Zeitung, dedicated to tourists of Lake Garda, and he is also a reviewer for the sportscasts on Telechiara in Padova (Ironically, this channel is owned by the Triveneto episcopate). He also writes for Il Gazzettino in Verona.
As of february 2005, he has also worked as a member of the Hellas Verona football club's staff.