"Built Into Lion" No Install Discs

[rgG]

Seems that if your HD dies, you are screwed. No booting from the optical drive anymore.

Edit: How do you access recovery mode, if your HD is hosed, since recovery mode would be on the same HD, even if it is on a different partition?

2nd Edit: What happens if you have to replace the HD? How do you get that restore partition on the new HD, or am I missing something simple? Would a restore from TM be able to put both partitions back, somehow? Would this mean you couldn't change or replace your hard drives yourself without losing the restore partition?