Alex took his first major film role, in the cult vampire movie, The Lost Boys as 'Marko' (1987). But it was two years later, that he landed the role for which he is most famous for - that of "Bill S. Preston, Esq.", in the cult comedy classic, Bill & Ted's Excellent Adventure (1989). The film was a huge success, spawning two television series and a well-received sequel, Bill & Ted's Bogus Journey (1991).
With Tom Stern, Winter co-created many influential comedy projects which he wrote, directed and starred in. Among them are the hit MTV series, The Idiot Box (1991), and the Twentieth Century Fox release, Freaked (1993).
In 1999, he wrote and directed the critically-acclaimed thriller, Fever (1999), which made its debut at the Cannes Film Festival.
In 2007, Winter produced and directed Cartoon Network's live-action movie event, Ben 10: Race Against Time (2007). Next, Winter produced and directed the sequel, Ben 10: Alien Swarm (2009).
Recent work as an actor include a guest-starring role on the Fox TV Series, Bones (2005), and vocal roles on the Adult Swim series, Robot Chicken (2005) and Saul of the Mole Men(2007). Most recently, Winter co-starred in the Spanish-produced thriller, Grand Piano (2013).
Also completed is Downloaded (2013), a feature documentary about the Digital Revolution, that Winter produced and directed for VH1 Rock Docs.
Alongside his feature and acting projects, Winter maintains a successful career directing TV shows and commercials, both in America and the UK.
Winter divides his time between New York and London, where he directs television commercials and music videos.