Yes there are very many irregular verbs, although most of them are not extremely irregular. A broad outline can be found at. http://www.dutchgrammar.com/en/?n=Verbs.Ir01 There are a few truly irregular verbs: http://www.dutchgrammar.com/en/?n=Verbs.Ir05 These are also among the most use verbs of the Dutch language. There are many (probably hundreds) of so called "strong verbs" which have a regular present tense, but differ in how the simple past or present perfect is formed. This page lists more than 200 http://www.dutchgrammar.com/en/?n=Verbs.Ir03 but it does not include more complex verbs derived from this base verb. (like "ombuigen" is derived from "buigen") Those verbs behave the same as their respective base verbs though.

haha devastate Kuba. as a, let's say past active learner of dutch, i would advise to keep your mind on understanding and expressing, not on little things such as verb irregularities. You'll get them wrong a few times anyway, so why bother learning them by heart or stress yourself with them ? And yes i thought about going through a list, such as the ones posted by Maryn, but by the 10th verb i realised it wasn't fun, i'd rather see/hear the irregular verb. Funny fact : in my early days, i used to say 'gewonen' instead of 'gewoond', in my head gewonen (=ordinary) was the right perfect participle for wonen. Oh and dutchmen understood what i was saying ... they probably had a good laugh, but hey :D

As a learner, I would say that there are more of them than in English. And, like Meryn said, a lot of them can have more complexed forms (which devastate me).