OP – What you riding now? What you thinking you want to do?
You probably want to look for something with a slacker headangle, more travel and a bit burlier if you want to get into it. That's basically the difference between XC and DH bikes – I've always seen FR being inbetween the two but closer to DH – you could class it as dicking about on burly bikes if you like 😉
(All-mountain sits between FR and XC – if you want to get all crazy on marketing terms. )
However, as people are saying, most bikes are capable of doing anything some are just better designed for certain roles. having seen someone jump a double and pull a table on a Scott Scale (XC Race) I totally agree.