Any film starring Matthew McConaughey is wearing a huge sign around its neck saying “watch it, caveat emptor, proceed at your own risk,” etc. That doesn’t mean The Lincoln Lawyer (Lionsgate, 3.18.11) is a problem, but how can you not feel wary? Marisa Tomei, John Leguizamo costarring. The director is Brad Furman, whose only previous feature is The Take (’07), which no one saw.