Bitlocker is a great piece of software, compared to the other options like McAfee Safeboot. I'm sure you fully understand why it has to be encrypted.
In a corporate environment, I wouldn't mind betting you are not supposed to be storing personal photos, vids and music on a work provided machine

With Bitlocker, you select what drives to encrypt, and there is an option to enforce encryption of 'new' devices as the machine sees them. I wouldn't mind betting these settings are enforced via GPO, so as a minimum, you will likely need to be a Domain Administrator to block the inheritence of the settings for a specific OU (which would block it for every machine in that OU (Bitlocker is a PC specific option, not User specific)).
Assuming you're not a Domain Admin - a fair assumption I think given your skillset - the only option is out via the network, as in take the machine home and map a drive to your own PC.
I do know of ways to bypass GPO (temporarily) if you are an Admin of the PC, but you're in a whole world of getting sacked for doing such things - your company have turned bitlocker on (its not on by default), and presumably enforcing it via GPO, thus its mandatory. Its safe to assume that bypassing that would, rightly, end up with a nice shiny P45.