11. Tobey Maguire's Hairpiece - Fear & Loathing In Las Vegas
Terry Gilliam's acid trip of a road movie features a memorable cameo from Tobey Maguire as a hitchhiker picked up by Raoul Duke (Johnny Depp) and Dr. Gonzo (Benicio del Toro), kitted out in what all would rightly assume is an incredibly silly hairpiece.
However, the production failed to add a requirement in Maguire's contract that he'd need to shave his head, so he ended up demanding $15,000 for the hassle. Gilliam refused, instead giving Maguire a bald cap and having the hair added digitally.
The results are shockingly seamless for a 20-year-old movie, and even today it's incredibly difficult to find the CGI seam.
Somewhat hilariously, though, the VFX hair ended up costing far more than the fifteen grand Maguire demanded, and given Gilliam's notorious stubbornness, we'll assume he refused Maguire's offer out of sheer spite.