To be a 2.5 hours movie, it is watchable. The performance of the casting somehow keeps you interested. However, the science concepts they dive into, weather they are accurate or no, can be a little bit of a turn off and at the end the complicated relationship between Cooper and his daughter was the only thing that kept the plot alive. I just basically watched the whole movie to find out if he was able to came back to earth or not to meet again with her. So, yes, a kind of interesting movie, but if i have more than 2 hours to watch a movie, i would probably choose a different one. A little bit overrated i would say.