Unfortunately there aren't many good dinosaur movies except Jurassic Park series.
Here are some good ones ,and some weak but watchable ones:
-Peter Jackson's
King Kong (2005) -Great movie with awesome dinosaur CGI.
-Disney's
Dinosaur (2000) )-Good CGI animated movie
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The Land Before TIme (1988) ) - Kids animation,decent nonetheless.
-Sir Arthur Conan Doyle's
The Lost World (TV 2001) - The only decent movie based on Conan Doyle's novel,although it's just a TV movie (i still hope they will eventually make a big budget movie loyal to the novel);i never liked the silent one from 1925,but i guess you could check that one out too.
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Terra Nova (TV Series 2011) -The series will air this fall on FOX,and it is produced by Steven Spielberg ;it was supposed to air this may but it was delayed to fall,but anyway the plot and the preview look great,it has great potential and besides it will air at the same time the JP game will launch

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Walking With Dinosaurs (TV MiniSeries 1999) -Awesome CGI Documentary,produced by BBC and Discovery Channel.
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Dinosaur Planet (TV MiniSeries 2003) - Another great CGI Documentary,also produced by Discovery Channel
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A Sound of Thunder (2005) - Although it's a weak SF movie,it has some nice dinosaurs in it.
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Carnosaur (1993)- Cheesy B-Movie based on John Brosnan's novel;i only watched it because i liked the novel.
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Ice Age 3: Dawn of the Dinosaurs (2009) - Great animation,like the other 2 movies of the series.
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The Tree of Life (2011)- A very ambitious movie from Terrence Malick that will launch in theaters this month;although the details aren't clear ,it seems it will feature some CGI dinosaurs (but probably in just a few scenes).
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Dinotopia (TV MiniSeries 2002) -Decent dinosaur show.