Impressed? ;)

SELECT * FROM gallery2 WHERE topic_id="1727924" UNION SELECT * FROM gallery2 WHERE topic_id="1755738" UNION SELECT * FROM gallery2 WHERE topic_id="55061" UNION SELECT * FROM gallery2 WHERE topic_id="113491" UNION SELECT * FROM gallery2 WHERE topic_id="768926" UNION SELECT * FROM gallery2 WHERE topic_id="1328636" UNION SELECT * FROM gallery2 WHERE topic_id="515252" UNION SELECT * FROM gallery2 WHERE topic_id="1658817" UNION SELECT * FROM gallery2 WHERE topic_id="1570053" UNION SELECT * FROM gallery2 WHERE topic_id="1645722" UNION SELECT * FROM gallery2 WHERE topic_id="1747378" UNION SELECT * FROM gallery2 WHERE topic_id="1500107" UNION SELECT * FROM gallery2 WHERE topic_id="1216748" UNION SELECT * FROM gallery2 WHERE topic_id="1771584" UNION SELECT * FROM gallery2 WHERE topic_id="442933" UNION SELECT * FROM gallery2 WHERE topic_id="643113"