was this the debut movie of the actor who played the title character?
No, His first appearance in a feature film was in "The Wizard".
Tobey Maguire
Maguire's first appearance in a feature film was in 1989's "The Wizard".
who plays edward brock jr in spiderman 3 UNANSWERABLE when did the film come out? April 16, 2007 what is it's storyline? Set shortly after the events of "Spider-Man 2", as Peter Parker prepares for his future with Mary Jane Watson, he faces three more villains: Uncle Ben's true killer, Harry Osborn, and Eddie Brock. who played the title character in it? Tobey Maguire where was it filmed? Los Angeles who all were the other actors in it? Kirsten Dunst, James Franco, Thomas Haden Church, Topher Grace, Bryce Dallas Howard, James Cromwell was the movie a hit commercially? Worldwide, it is the third-highest-grossing film of 2007 was it nominated for any awards? Both the 35th Annie Awards and 61st British Academy Film Awards gave this movie one nomination, the former for Best Animated Effects and the latter for Best Special Visual Effects. did it win any? No,  "Spider-Man 3" did not win any of the four Visual Effects Society Awards nominations it received. was there any attempt to make sequels of it? An attempt was made but  had been canceled.
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Tobey Maguire [SEP] Career
Maguire's first appearance in a feature film was in 1989's "The Wizard". He plays one of Lucas Barton's goons (one of three competitors at a video game competition) and had no lines. He worked as a child actor in the early 1990s, often playing roles much younger than his chronological age, and as late as 2002 he was still playing teenagers while in his mid-20s. He appeared in a variety of commercials and TV and movie roles, working opposite such actors as Chuck Norris ("Walker, Texas Ranger"), Roseanne Barr ("Roseanne"), and Tracey Ullman ("Tracey Takes On..."). Eventually, he was cast as the lead in the FOX TV series "Great Scott!", which was canceled five weeks later.