X-44 X-44A MANTA multi-axis-no-tail-aircraft

This is a short (but rare) computer animation someone sent to me years ago, showing a flight by the experimental X-44 MANTA.

As is obvious to most people, its based on the F-22, but it would appear to have rounded exhaust ports rather than the boxy rectangular ones on the F-22.

Anyway, please comment, tell me your thoughts about this airplane. Other tailless aircraft of interest with different airframe design would include the X-36.