Yeah, and it's not too hard either!
What you want to do is install your first (and preferred?) distro and it's associated bootloader. Then install your 2nd+ distro but don't install it's bootloader. Once you've got it installed, reboot and boot up into yout 1st distro. Mount the partition that holds your 2nd+'s distro's kernel file (the vmlinuz file) and copy it over to your 1st distros partition (/boot would be a good place) and name it accordingly. Then edit your lilo.conf or grub.conf file and add an entry for it using the copy of the kernel on your 1st distro's partition, but don't forget to specify which partition to use as root.